Picon

FW: Pending changes to time of Newfoundland Time Zone for Daylight Savings Time

I'm forwarding this message from Michael Pelley, who is not on the time zone mailing list. Those of you who
are on the list, please direct replies appropriately.

Once we learn that the proclamation has been issued, the changes should up at
ftp://elsie.nci.nih.gov/pub about two weeks later.
From there propagation depends on database users.

				--ado

From: Pelley, Michael [mailto:MPelley <at> gov.nl.ca] 
Sent: Friday, August 05, 2011 12:43
To: tz <at> lecserver.nci.nih.gov
Subject: Pending changes to time of Newfoundland Time Zone for Daylight Savings Time

Folks,

The Government of Newfoundland and Labrador has pending changes to modify the hour for daylight savings
time to come into effect in November 2011.  This modification would change the time from 12:01AM to
2:00AM on the dates of the switches of Daylight Savings Time to/from Standard Time.

As a matter of reference, in Canada provinces have the authority of setting time zone information.  The
legislation has passed our legislative body (“The House of Assembly”) and is awaiting the
proclamation to come into effect.  You may find this information at:
http://www.assembly.nl.ca/legislation/sr/lists/Proclamation.htm and search within that web page
for “Standard Time (Amendment) Act”.  The Act may be found at: http://www.assembly.nl.ca/business/bills/Bill1106.htm

We would appreciate if we could receive some guidance as to:
• The official mechanism for implementing this change;
• The timeframe for the implementation of the change within the TZ sources.

(Continue reading)

Chris Walton | 5 Aug 23:07 2011

RE: Pending changes to time of Newfoundland Time Zone for Daylight Savings Time


Bill 6 received Royal Assent on May 31/2011.
http://www.assembly.nl.ca/legislation/sr/annualstatutes/2011/1106.chp.htm
Section 2 of Bill 6 states:
"This Act comes into force on a day to be proclaimed by the Lieutenant-Governor in Council."

Do we expect Bill 6 to receive proclamation "before" or "after" to the next clock change?
i.e. will proclamation take place prior to Nov 6/2011?

Assuming the Bill is proclaimed prior to Nov 6/2001, a patch to the northamerica file might look something
like this:

--- old/northamerica	2011-06-15 11:05:20.000000000 +0000
+++ new/northamerica	2011-08-05 20:04:17.000000000 +0000
 <at>  <at>  -1178,7 +1178,8  <at>  <at> 
 			-3:30:52 StJohns N%sT	1935 Mar 30
 			-3:30	StJohns	N%sT	1942 May 11
 			-3:30	Canada	N%sT	1946
-			-3:30	StJohns	N%sT
+			-3:30	StJohns	N%sT	2011 Nov  6
+			-3:30	Canada	N%sT

 # most of east Labrador

 <at>  <at>  -1192,7 +1193,8  <at>  <at> 
 			-3:30	StJohns	N%sT	1942 May 11
 			-3:30	Canada	N%sT	1946
 			-3:30	StJohns	N%sT	1966 Mar 15 2:00
-			-4:00	StJohns	A%sT
+			-4:00	StJohns	A%sT	2011 Nov  6
(Continue reading)

Jonathan Leffler | 5 Aug 23:20 2011
Picon

Re: Pending changes to time of Newfoundland Time Zone for Daylight Savings Time

Where is the 'time of change' recorded in this data?

As I understand the legislation, having found http://www.assembly.nl.ca/legislation/sr/statutes/s23.htm (which is, I think, the current Standard Time Act), the intent is to alter the local time at which the switch is made from the unusual 12:01 am to the more normal 02:00 am.  It is not clear to me that the existing table recognizes this as the time when the change occurs.  I don't think the offsets from UTC (Greenwich Mean Solar Time is mentioned in the statute) change; it is 2.5 hours west of (behind) UTC during daylight time and 3.5 hours west of (behind) UTC during standard time.

s23.htm says in part:

Standard time

        2. (1) Time in the province shall be reckoned as 3 1/2 hours later than Greenwich mean solar time.

             (2)  Time reckoned in accordance with subsection (1) shall be known as "Newfoundland Standard Time".

RSN1970 c270 s2

Daylight time

        3. (1) During the period in each year that the Lieutenant-Governor in Council may by regulation establish, time in the province shall be reckoned as 2 1/2 hours later than Greenwich mean solar time.

          (1.1)  Notwithstanding subsection (1), beginning in the year 2007 and continuing until changed under subsection (1), during the period in each year between one minute after 12 a.m. of the second Sunday in March and one minute after 12 a.m. of the first Sunday in November time in the province shall be reckoned as 2 1/2 hours later than Greenwich mean solar time.

             (2)  Time reckoned in accordance with subsection (1) shall be known as "Newfoundland Daylight Time".

RSN1970 c270 s3; 1987 c3 s1; 2006 c31 s1


The amended section 3(1.1) reads:

    (1.1)  Until changed under subsection (1), during the period in each year between 2 a.m. of the second Sunday in March and 2 a.m. of the first Sunday in November time in the province shall be reckoned as 2 1/2 hours later than Greenwich mean solar time.


It will be interesting working backwards to the 1970 act to see what other changes have been made over the years, and whether the historical data is accurate.


On Fri, Aug 5, 2011 at 14:07, Chris Walton <Chris.Walton <at> telus.com> wrote:

Bill 6 received Royal Assent on May 31/2011.
http://www.assembly.nl.ca/legislation/sr/annualstatutes/2011/1106.chp.htm
Section 2 of Bill 6 states:
"This Act comes into force on a day to be proclaimed by the Lieutenant-Governor in Council."

Do we expect Bill 6 to receive proclamation "before" or "after" to the next clock change?
i.e. will proclamation take place prior to Nov 6/2011?


Assuming the Bill is proclaimed prior to Nov 6/2001, a patch to the northamerica file might look something like this:

--- old/northamerica    2011-06-15 11:05:20.000000000 +0000
+++ new/northamerica    2011-08-05 20:04:17.000000000 +0000
<at> <at> -1178,7 +1178,8 <at> <at>
                       -3:30:52 StJohns N%sT   1935 Mar 30
                       -3:30   StJohns N%sT    1942 May 11
                       -3:30   Canada  N%sT    1946
-                       -3:30   StJohns N%sT
+                       -3:30   StJohns N%sT    2011 Nov  6
+                       -3:30   Canada  N%sT

 # most of east Labrador

<at> <at> -1192,7 +1193,8 <at> <at>
                       -3:30   StJohns N%sT    1942 May 11
                       -3:30   Canada  N%sT    1946
                       -3:30   StJohns N%sT    1966 Mar 15 2:00
-                       -4:00   StJohns A%sT
+                       -4:00   StJohns A%sT    2011 Nov  6
+                       -4:00   Canada  A%sT


 # west Labrador, Nova Scotia, Prince Edward I



-chris
-----Original Message-----
From: Olson, Arthur David (NIH/NCI) [E] [mailto:olsona <at> dc37a.nci.nih.gov]
Sent: August 5, 2011 2:54 PM
To: 'tz <at> elsie.nci.nih.gov'
Cc: 'mpelley <at> gov.nl.ca'
Subject: FW: Pending changes to time of Newfoundland Time Zone for Daylight Savings Time

I'm forwarding this message from Michael Pelley, who is not on the time zone mailing list. Those of you who are on the list, please direct replies appropriately.

Once we learn that the proclamation has been issued, the changes should up at ftp://elsie.nci.nih.gov/pub about two weeks later.
From there propagation depends on database users.

                               --ado

From: Pelley, Michael [mailto:MPelley <at> gov.nl.ca]
Sent: Friday, August 05, 2011 12:43
To: tz <at> lecserver.nci.nih.gov
Subject: Pending changes to time of Newfoundland Time Zone for Daylight Savings Time

Folks,

The Government of Newfoundland and Labrador has pending changes to modify the hour for daylight savings time to come into effect in November 2011.  This modification would change the time from 12:01AM to 2:00AM on the dates of the switches of Daylight Savings Time to/from Standard Time.

As a matter of reference, in Canada provinces have the authority of setting time zone information.  The legislation has passed our legislative body (“The House of Assembly”) and is awaiting the proclamation to come into effect.  You may find this information at: http://www.assembly.nl.ca/legislation/sr/lists/Proclamation.htm and search within that web page for “Standard Time (Amendment) Act”.  The Act may be found at: http://www.assembly.nl.ca/business/bills/Bill1106.htm

We would appreciate if we could receive some guidance as to:
• The official mechanism for implementing this change;
• The timeframe for the implementation of the change within the TZ sources.

Thank you.

Cheers
Mike

-----------------------------------------------

MICHAEL PELLEY  |  Manager of Enterprise Architecture - Solution Delivery

Office of the Chief Information Officer
Executive Council
Government of Newfoundland & Labrador
P.O. Box 8700,  40 Higgins  Line,   St. John's  NL  A1B 4J6

709 729-7457 (t)  | 709 729-6767 (f)  |  709 690-2513 (c)  |  mpelley <at> gov.nl.ca

________________________________________
“This email and any attached files are intended for the sole use of the primary and copied addressee(s) and may contain privileged and/or confidential information. Any distribution, use or copying by any means of this information is strictly prohibited. If you received this email in error, please delete it immediately and notify the sender.”





--
Jonathan Leffler <jonathan.leffler <at> gmail.com>  #include <disclaimer.h>
Guardian of DBD::Informix - v2011.0612 - http://dbi.perl.org
"Blessed are we who can laugh at ourselves, for we shall never cease to be amused."
Chris Walton | 6 Aug 00:06 2011

RE: Pending changes to time of Newfoundland Time Zone for Daylight Savings Time

Jonathan,

You are correct.  The intention is to move the change from 12:01am to 2:00am.
This would conform with the rest of North America.

You asked where the "time of change" is recorded in "this data".
I am not sure if your use of the word "data" refers to the current TZ database, my patch, or the legislation.
So I will try answer to all three.

Bill 6 very specifically states "AN ACT TO AMEND THE STANDARD TIME ACT".  i.e. it does not stand by itself.
The current Standard Time Act which you quoted yourself currently spells out 12:01 in nice long text:
"...between one minute after 12 a.m. of the second Sunday in March and one minute after 12 a.m. of...".

The current TZ database does currently accommodate for the 12:01 change.  It is embedded into the "StJohns"
rule from 1987 onwards.
Perhaps the dates prior to 1987 should reflect the change to;   I can't speak to that.
The proposed patch (which we can't theoretically implement until Proclamation occurs) simply switches
America/St_Johns and America/Goose_Bay from the "StJohns" rule to the "Canada" rule on Nov 6/2011.
The result is this:
$ zdump -v America/St_Johns | grep 201[012]
America/St_Johns  Sun Mar 14 03:30:59 2010 UTC = Sun Mar 14 00:00:59 2010 NST isdst=0 gmtoff=-12600
America/St_Johns  Sun Mar 14 03:31:00 2010 UTC = Sun Mar 14 01:01:00 2010 NDT isdst=1 gmtoff=-9000
America/St_Johns  Sun Nov  7 02:30:59 2010 UTC = Sun Nov  7 00:00:59 2010 NDT isdst=1 gmtoff=-9000
America/St_Johns  Sun Nov  7 02:31:00 2010 UTC = Sat Nov  6 23:01:00 2010 NST isdst=0 gmtoff=-12600
America/St_Johns  Sun Mar 13 03:30:59 2011 UTC = Sun Mar 13 00:00:59 2011 NST isdst=0 gmtoff=-12600
America/St_Johns  Sun Mar 13 03:31:00 2011 UTC = Sun Mar 13 01:01:00 2011 NDT isdst=1 gmtoff=-9000
America/St_Johns  Sun Nov  6 04:29:59 2011 UTC = Sun Nov  6 01:59:59 2011 NDT isdst=1 gmtoff=-9000
America/St_Johns  Sun Nov  6 04:30:00 2011 UTC = Sun Nov  6 01:00:00 2011 NST isdst=0 gmtoff=-12600
America/St_Johns  Sun Mar 11 05:29:59 2012 UTC = Sun Mar 11 01:59:59 2012 NST isdst=0 gmtoff=-12600
America/St_Johns  Sun Mar 11 05:30:00 2012 UTC = Sun Mar 11 03:00:00 2012 NDT isdst=1 gmtoff=-9000
America/St_Johns  Sun Nov  4 04:29:59 2012 UTC = Sun Nov  4 01:59:59 2012 NDT isdst=1 gmtoff=-9000
America/St_Johns  Sun Nov  4 04:30:00 2012 UTC = Sun Nov  4 01:00:00 2012 NST isdst=0 gmtoff=-12600

FYI:
Official legislated time in Newfoundland and Labrador is always "Newfoundland Time" (NST/NDT).
None of the Legislation caters to the fact that much of Labrador observes Atlantic Time (AST/ADT).

-chris

From: Jonathan Leffler [mailto:jonathan.leffler <at> gmail.com] 
Sent: August 5, 2011 5:21 PM
To: tz <at> elsie.nci.nih.gov
Cc: mpelley <at> gov.nl.ca; Chris Walton
Subject: Re: Pending changes to time of Newfoundland Time Zone for Daylight Savings Time

Where is the 'time of change' recorded in this data?

As I understand the legislation, having found
http://www.assembly.nl.ca/legislation/sr/statutes/s23.htm (which is, I think, the current
Standard Time Act), the intent is to alter the local time at which the switch is made from the unusual 12:01
am to the more normal 02:00 am.  It is not clear to me that the existing table recognizes this as the time
when the change occurs.  I don't think the offsets from UTC (Greenwich Mean Solar Time is mentioned in the
statute) change; it is 2.5 hours west of (behind) UTC during daylight time and 3.5 hours west of (behind)
UTC during standard time.

s23.htm says in part:
Standard time 
	 2. 	 (1) Time in the province shall be reckoned as 3 1/2 hours later than Greenwich mean solar time. 
	 (2)	 Time reckoned in accordance with subsection (1) shall be known as "Newfoundland Standard Time". 
RSN1970 c270 s2 
Daylight time 
	 3. 	 (1) During the period in each year that the Lieutenant-Governor in Council may by regulation
establish, time in the province shall be reckoned as 2 1/2 hours later than Greenwich mean solar time. 
	 (1.1)	 Notwithstanding subsection (1), beginning in the year 2007 and continuing until changed under
subsection (1), during the period in each year between one minute after 12 a.m. of the second Sunday in
March and one minute after 12 a.m. of the first Sunday in November time in the province shall be reckoned as 2
1/2 hours later than Greenwich mean solar time. 
	 (2)	 Time reckoned in accordance with subsection (1) shall be known as "Newfoundland Daylight Time". 
RSN1970 c270 s3; 1987 c3 s1; 2006 c31 s1 

The amended section 3(1.1) reads:

	(1.1)	Until changed under subsection (1), during the period in each year between 2 a.m. of the second
Sunday in March and 2 a.m. of the first Sunday in November time in the province shall be reckoned as 2 1/2
hours later than Greenwich mean solar time.

It will be interesting working backwards to the 1970 act to see what other changes have been made over the
years, and whether the historical data is accurate.

On Fri, Aug 5, 2011 at 14:07, Chris Walton <Chris.Walton <at> telus.com> wrote:

Bill 6 received Royal Assent on May 31/2011.
http://www.assembly.nl.ca/legislation/sr/annualstatutes/2011/1106.chp.htm
Section 2 of Bill 6 states:
"This Act comes into force on a day to be proclaimed by the Lieutenant-Governor in Council."

Do we expect Bill 6 to receive proclamation "before" or "after" to the next clock change?
i.e. will proclamation take place prior to Nov 6/2011?

Assuming the Bill is proclaimed prior to Nov 6/2001, a patch to the northamerica file might look something
like this:

--- old/northamerica    2011-06-15 11:05:20.000000000 +0000
+++ new/northamerica    2011-08-05 20:04:17.000000000 +0000
 <at>  <at>  -1178,7 +1178,8  <at>  <at> 
                       -3:30:52 StJohns N%sT   1935 Mar 30
                       -3:30   StJohns N%sT    1942 May 11
                       -3:30   Canada  N%sT    1946
-                       -3:30   StJohns N%sT
+                       -3:30   StJohns N%sT    2011 Nov  6
+                       -3:30   Canada  N%sT

 # most of east Labrador

 <at>  <at>  -1192,7 +1193,8  <at>  <at> 
                       -3:30   StJohns N%sT    1942 May 11
                       -3:30   Canada  N%sT    1946
                       -3:30   StJohns N%sT    1966 Mar 15 2:00
-                       -4:00   StJohns A%sT
+                       -4:00   StJohns A%sT    2011 Nov  6
+                       -4:00   Canada  A%sT

 # west Labrador, Nova Scotia, Prince Edward I

-chris
-----Original Message-----
From: Olson, Arthur David (NIH/NCI) [E] [mailto:olsona <at> dc37a.nci.nih.gov]
Sent: August 5, 2011 2:54 PM
To: 'tz <at> elsie.nci.nih.gov'
Cc: 'mpelley <at> gov.nl.ca'
Subject: FW: Pending changes to time of Newfoundland Time Zone for Daylight Savings Time

I'm forwarding this message from Michael Pelley, who is not on the time zone mailing list. Those of you who
are on the list, please direct replies appropriately.

Once we learn that the proclamation has been issued, the changes should up at
ftp://elsie.nci.nih.gov/pub about two weeks later.
From there propagation depends on database users.

                               --ado

From: Pelley, Michael [mailto:MPelley <at> gov.nl.ca]
Sent: Friday, August 05, 2011 12:43
To: tz <at> lecserver.nci.nih.gov
Subject: Pending changes to time of Newfoundland Time Zone for Daylight Savings Time

Folks,

The Government of Newfoundland and Labrador has pending changes to modify the hour for daylight savings
time to come into effect in November 2011.  This modification would change the time from 12:01AM to
2:00AM on the dates of the switches of Daylight Savings Time to/from Standard Time.

As a matter of reference, in Canada provinces have the authority of setting time zone information.  The
legislation has passed our legislative body ("The House of Assembly") and is awaiting the proclamation
to come into effect.  You may find this information at:
http://www.assembly.nl.ca/legislation/sr/lists/Proclamation.htm and search within that web page
for "Standard Time (Amendment) Act".  The Act may be found at: http://www.assembly.nl.ca/business/bills/Bill1106.htm

We would appreciate if we could receive some guidance as to:
. The official mechanism for implementing this change;
. The timeframe for the implementation of the change within the TZ sources.

Thank you.

Cheers
Mike

-----------------------------------------------

MICHAEL PELLEY  |  Manager of Enterprise Architecture - Solution Delivery

Office of the Chief Information Officer
Executive Council
Government of Newfoundland & Labrador
P.O. Box 8700,  40 Higgins  Line,   St. John's  NL  A1B 4J6

709 729-7457 (t)  | 709 729-6767 (f)  |  709 690-2513 (c)  |  mpelley <at> gov.nl.ca

________________________________________
"This email and any attached files are intended for the sole use of the primary and copied addressee(s) and
may contain privileged and/or confidential information. Any distribution, use or copying by any means
of this information is strictly prohibited. If you received this email in error, please delete it
immediately and notify the sender."

--

-- 
Jonathan Leffler <jonathan.leffler <at> gmail.com>  #include <disclaimer.h>
Guardian of DBD::Informix - v2011.0612 - http://dbi.perl.org
"Blessed are we who can laugh at ourselves, for we shall never cease to be amused."

Chris Walton | 6 Aug 05:13 2011

RE: America/Resolute

America/Resolute contains errors which I documented in a posting to this list on March 21/2011.
The errors were due to some incorrect information I received via phone and e-mail.

Here is a patch for the "northamerica" and "zone.tab" files:

diff -u old/northamerica new/northamerica
--- old/northamerica	2011-06-15 11:05:20.000000000 +0000
+++ new/northamerica	2011-08-06 02:51:01.000000000 +0000
 <at>  <at>  -1965,14 +1965,12  <at>  <at> 
 			-6:00	Canada	C%sT	2000 Oct 29 2:00
 			-5:00	Canada	E%sT
 # aka Qausuittuq
-# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
-Rule	Resolute 2006	max	-	Nov	Sun>=1	2:00	0	ES
-Rule	Resolute 2007	max	-	Mar	Sun>=8	2:00	0	CD
 Zone America/Resolute	0	-	zzz	1947 Aug 31 # Resolute founded
 			-6:00	NT_YK	C%sT	2000 Oct 29 2:00
 			-5:00	-	EST	2001 Apr  1 3:00
 			-6:00	Canada	C%sT	2006 Oct 29 2:00
-			-5:00	Resolute	%sT
+			-5:00	-	EST	2007 Mar 11 3:00
+			-6:00	Canada	C%sT
 # aka Kangiqiniq
 Zone America/Rankin_Inlet 0	-	zzz	1957 # Rankin Inlet founded
 			-6:00	NT_YK	C%sT	2000 Oct 29 2:00
diff -u old/zone.tab new/zone.tab
--- old/zone.tab	2011-06-15 22:33:42.000000000 +0000
+++ new/zone.tab	2011-08-06 02:39:36.000000000 +0000
 <at>  <at>  -120,7 +120,7  <at>  <at> 
 CA	+4823-08915	America/Thunder_Bay	Eastern Time - Thunder Bay, Ontario
 CA	+6344-06828	America/Iqaluit	Eastern Time - east Nunavut - most locations
 CA	+6608-06544	America/Pangnirtung	Eastern Time - Pangnirtung, Nunavut
-CA	+744144-0944945	America/Resolute	Eastern Standard Time - Resolute, Nunavut
+CA	+744144-0944945	America/Resolute	Central Time - Resolute, Nunavut
 CA	+484531-0913718	America/Atikokan	Eastern Standard Time - Atikokan, Ontario and Southampton I, Nunavut
 CA	+624900-0920459	America/Rankin_Inlet	Central Time - central Nunavut
 CA	+4953-09709	America/Winnipeg	Central Time - Manitoba & west Ontario

-chris

-----Original Message-----
From: Chris Walton 
Sent: March 21, 2011 11:19 PM
To: tz <at> elsie.nci.nih.gov
Subject: America/Resolute

Back in 2007 I initiated the creation of a new "zone file" for Resolute Bay.
Resolute Bay is a small community located about 900km north of the Arctic Circle.
The zone file was required because Resolute Bay had decided to use UTC-5 instead of UTC-6 for the winter of 2006-2007.
http://www.nnsl.com/frames/newspapers/2006-11/nov13_06none.html

According to new information which I received last week, Resolute Bay went back to using UTC-6 in the winter
of 2007-2008.
This new information conflicts with information I received in November 2008.
Assuming the new information is correct, a change is required for "America/Resolute"
Details are below. Sorry this post is so long.

#----------------------------------------------------------

On March 11/2007 most of Canada went onto daylight saving.
On March 14/2007 I phoned the Resolute Bay hamlet office to do a "time check".
I talked to somebody that was both knowledgeable and helpful.
I was able to confirm that Resolute Bay was still operating on UTC-5.
It was explained to me that Resolute Bay had been on the Eastern Time zone (EST) in the winter, and was now back
on the Central Time zone (CDT).
i.e. the time zone had changed twice in the last year but the clocks had not moved.
The residents had to know which time zone they were in so they could follow the correct TV schedule.

#----------------------------------------------------------

I did not contact anybody in Resolute Bay for the next year and a half.

#----------------------------------------------------------

On Nov 02/2008 most of Canada went onto standard time.
On Nov 03/2008 I phoned the Resolute Bay hamlet office.  I talked to a woman who had difficulty understanding
anything I asked.  She managed to tell me that Resolute Bay had changed to "Eastern Time" the day before.  I
don't recall any elaboration on what this meant.  That was all I got out of the call.  I don't remember whether
or not I tried to do a "time check".
I was left with the impression that Resolute Bay was still stuck on UTC-5 (EST in winter and CDT in summer).
However, due to the challenging nature of the phone call, I decided to seek out an alternate source of information.
I found an e-mail address for somebody by the name of Stephanie Adams whose job was listed as "Inns North
Support Officer for Arctic Co-operatives".  I was under the impression that Stephanie lived and worked in
Resolute Bay.
Note: I don't think this was same Stephanie Adams that appeared in the center of a well known U.S. based magazine.
I sent an e-mail to Stephanie on Nov 03/2008.  Stephanie forwarded my e-mail to somebody by the name of
Silvano Cendou; I have no information on who Silvano is.

On Nov 05/2008, Silvano responded with this:
	'Hi Stephanie
	Resolute Bay did not turn their clocks back on Sunday!
	They kept the same time as they had proir to the change.
 	Hope this helps you 
	Silvano'

Stephanie forwarded Silvano's e-mail back to me.

The phone calls and the e-mails all pointed to the permanent use of UTC-5 with a "time zone change" twice a year.
On Nov 13/2008 I sent a post to this mailing list; I stated that Resolute Bay was still using Eastern Standard
Time in winter and Central Daylight Time in summer.

#----------------------------------------------------------

I did not contact anybody in Resolute Bay for the next two and a half years.

#----------------------------------------------------------

On March 14/2011 I phoned the hamlet office again.
I was told that Resolute Bay had been using Central Standard Time over the winter of 2010-2011 and that the
clocks had therefore been moved one hour ahead on March 13/2011.
The person I talked to was aware that Resolute Bay had previously experimented with Eastern Standard Time
but he could not tell me when the practice had stopped.

#----------------------------------------------------------

On March 17/2011 I searched the Web to find an e-mail address of somebody that might be able to tell me exactly
when Resolute Bay went off Eastern Standard Time.
I stumbled on the name "Aziz Kheraj".
Aziz used to be the mayor of Resolute Bay and he apparently owns half the businesses including "South Camp Inn".
This website has some info on Aziz:  http://www.uphere.ca/node/493

I sent Aziz an e-mail asking when Resolute Bay had stopped using Eastern Standard Time.

Aziz responded quickly with this:
	'hi,  The time was not changed for the 1 year only,
	the following year, the community went back to the old way of
	" spring ahead-fall behind"
	currently we are zulu plus 5 hrs and in the winter Zulu plus 6 hrs'

This of course conflicted with everything I had ascertained in November 2008.

I sent Aziz a copy of my 2008 e-mail exchange with Stephanie.
Aziz responded with this:
	'Hi,  Stephanie lives in Winnipeg.  I live here,
	You may want to check with the weather office in Resolute Bay
	or do a search on the weather through Env. Canada.  web site'

#--------------------------------------------------------------

If I had realized the Stephanie did not live in Resolute Bay I would never have contacted her.
I now believe that all the information I obtained in November 2008 should be ignored.

Assuming Aziz is correct, America/Resolute needs some changes.

I think it would be best to delete the "Resolute" rule, and then change "America/Resolute" to look like this:
Zone America/Resolute   0       -       zzz     1947 Aug 31 # Resolute founded
                        -6:00   NT_YK   C%sT    2000 Oct 29 2:00
                        -5:00   -       EST     2001 Apr  1 3:00
                        -6:00   Canada  C%sT    2006 Oct 29 2:00
                        -5:00   -       EST     2007 Mar 11 3:00
                        -6:00   Canada  C%sT

The comments in zone.tab should be reverted back to: "Central Time - Resolute, Nunavut"

I apologize for reporting incorrect information in 2008.
-chris

Mark Sim-Smith | 9 Aug 06:14 2011
Picon

Re: Farewell for a new day will move from Cape Mulinuu to Cape Taputapu

Tim Parenti <tim <at> timtimeonline.com> writes:

> 
> 
> I don't think it's quite been finalized yet, but
http://www.bbc.co.uk/news/world-13334229 seems to suggest that (Western) Samoa
will transition from Thursday 29 December 2011 23:59:59 UTC-11:00 to Saturday 31
December 2011 00:00:00 UTC+13:00.
> 
> 
>       Samoa will lose a day as it jumps straight from Thursday to 
> Saturday. Any residents with a birthday on Friday 30 December will have 
> to celebrate a day early, or a day late, as that date will not exist in 
> their country. 
> 
>
http://www.samoaobserver.ws/index.php?option=com_content&view=article&id=33094:moving-to-&catid=64:sunday-reading&Itemid=82
also mentions that "the shift would probably take place on December 29."--Tim
ParentiOn Tue, May 10, 2011 at 17:19, Olson, Arthur David (NIH/NCI) [E] <olsona
<at> dc37a.nci.nih.gov> wrote:
> Does anyone know at what instant Samoa plans to make its 24-hour jump?
>                                 --ado
> 
> 
> 
> 

The law has apparently been passed:

http://www.samoaobserver.ws/index.php?option=com_content&task=view&id=34103&Itemid=62

It appears that they will simply skip 30 Dec 2011 and move from the end of 29
Dec 2011 at UTC-11 to the beginning of 31 Dec 2011 UTC+13.  I'd try to be more
precise but I'd probably get it wrong, and time zone calculations always make my
head hurt :P.  I think Tim above has it correct.

Picon

FW: Fingerprinting timezones

I'm forwarding this message from Conrad Irwin, who is not on the time zone mailing list. Those of you who are
on the list, please direct replies appropriately.  --ado

-----Original Message-----
From: Conrad Irwin [mailto:conrad.irwin <at> gmail.com] 
Sent: Monday, August 08, 2011 7:59
To: tz <at> lecserver.nci.nih.gov
Subject: Fingerprinting timezones

Hello there,

Thank you for the timezone database - it is a phenomenal resource.

The problem I would like to solve is that of having to ask a user of a
web-app for their timezone. While there is no way to directly query
for the user's timezone, the javascript engine in their web-browser is
capable of telling me the offset from UTC at any date.

It seems like, by selecting some number of dates to query, I should be
able to gather enough information to uniquely identify any given
timezone (or at least make a very good guess for a large proportion of
the user-base).

Before I embarked on doing this, I wanted to ask if anyone has seen a
similar attempt in the past? Are there some "gotchas" that mean that
this isn't actually as feasible as I naïvely hope?

Conrad

Paul Eggert | 9 Aug 06:26 2011

Re: FW: Fingerprinting timezones

> From: Conrad Irwin [mailto:conrad.irwin <at> gmail.com] 
> Sent: Monday, August 08, 2011 7:59

> I wanted to ask if anyone has seen a
> similar attempt in the past?

The closest analog I know, though it's not the same problem,
is GNU Emacs, which guesses the far-future rules for
your time zone by probing the near future.  It knows about
the usual patterns of rules world-wide.  (It throws in the
towel with Israeli rules, though -- good luck with that!)

Mark Davis ☕ | 9 Aug 16:05 2011

Re: FW: Fingerprinting timezones

If someone is using a particular version of the TZ database, you can probe about 5-6 past dates to discover the zone id (of course, you can't distinguish the zones that have the same rules). We do that in browsers, where there isn't an API to get the zone. 

Where the browser isn't using the TZ database (eg windows), you'll just get an approximation.

Mark
— Il meglio è l’inimico del bene —


On Mon, Aug 8, 2011 at 21:16, Olson, Arthur David (NIH/NCI) [E] <olsona <at> dc37a.nci.nih.gov> wrote:
I'm forwarding this message from Conrad Irwin, who is not on the time zone mailing list. Those of you who are on the list, please direct replies appropriately.  --ado

-----Original Message-----
From: Conrad Irwin [mailto:conrad.irwin <at> gmail.com]
Sent: Monday, August 08, 2011 7:59
To: tz <at> lecserver.nci.nih.gov
Subject: Fingerprinting timezones

Hello there,

Thank you for the timezone database - it is a phenomenal resource.

The problem I would like to solve is that of having to ask a user of a
web-app for their timezone. While there is no way to directly query
for the user's timezone, the javascript engine in their web-browser is
capable of telling me the offset from UTC at any date.

It seems like, by selecting some number of dates to query, I should be
able to gather enough information to uniquely identify any given
timezone (or at least make a very good guess for a large proportion of
the user-base).

Before I embarked on doing this, I wanted to ask if anyone has seen a
similar attempt in the past? Are there some "gotchas" that mean that
this isn't actually as feasible as I naïvely hope?

Conrad



John Haxby | 11 Aug 11:17 2011
Picon

Re: FW: Fingerprinting timezones

On 09/08/11 05:16, Olson, Arthur David (NIH/NCI) [E] wrote:
> The problem I would like to solve is that of having to ask a user of a
> web-app for their timezone. While there is no way to directly query
> for the user's timezone, the javascript engine in their web-browser is
> capable of telling me the offset from UTC at any date.
>
> It seems like, by selecting some number of dates to query, I should be
> able to gather enough information to uniquely identify any given
> timezone (or at least make a very good guess for a large proportion of
> the user-base).
>
> Before I embarked on doing this, I wanted to ask if anyone has seen a
> similar attempt in the past? Are there some "gotchas" that mean that
> this isn't actually as feasible as I naïvely hope?

 I happened to come across this today:
 http://site.pageloom.com/automatic-timezone-detection-with-javascript

The code and an explanation is here:
 https://bitbucket.org/pellepim/jstimezonedetect/wiki/Home

jch


Gmane