[tz] [PROPOSED] Adjust official transition for Turks & Caicos

J William Piggott elseifthen at gmx.com
Sat Aug 26 18:35:19 UTC 2017


On 08/26/2017 03:56 AM, Paul Eggert wrote:
> * NEWS: Adjust.
> * northamerica (America/Grand_Turk):
> Switch 2018-03-11 03:00, not 2018-04-01.
> ---
>  NEWS         | 2 +-
>  northamerica | 8 +++++++-
>  2 files changed, 8 insertions(+), 2 deletions(-)
> 
> diff --git a/NEWS b/NEWS
> index 0909112..55c06f7 100644
> --- a/NEWS
> +++ b/NEWS
> @@ -19,7 +19,7 @@ Unreleased, experimental changes
>      at 02:00.  (Thanks to Steffen Thorsen.)
>  
>      Turks & Caicos will switch from -04 all year to -05 with US DST on
> -    2018-04-01 at 00:00.  This affects UT offsets starting 2018-11-04
> +    2018-03-11 at 03:00.  This affects UT offsets starting 2018-11-04
>      at 02:00.  (Thanks to Steffen Thorsen.)
>  
>    Changes to past time stamps
> diff --git a/northamerica b/northamerica
> index 42529de..93655fa 100644
> --- a/northamerica
> +++ b/northamerica
> @@ -3390,12 +3390,18 @@ Zone America/Miquelon	-3:44:40 -	LMT	1911 May 15 # St Pierre
>  # Time, during the winter months with effect from April 2018 ...
>  # https://www.gov.uk/government/news/turks-and-caicos-post-cabinet-meeting-statement--3
>  #
> +# From Paul Eggert (2018-08-26):
                          ^
s/2018/2017/

> +# The date of effect of the spring 2018 change appears to be March 11,
> +# which makes more sense.  See: Hamilton D. Time change back
> +# by March 2018 for TCI. Magnetic Media. 2018-08-25.
                                               ^
s/2018/2017/

> +# http://magneticmediatv.com/2017/08/time-change-back-by-march-2018-for-tci/
> +#
>  # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
>  Zone America/Grand_Turk	-4:44:32 -	LMT	1890
>  			-5:07:11 -	KMT	1912 Feb # Kingston Mean Time
>  			-5:00	-	EST	1979
>  			-5:00	US	E%sT	2015 Nov Sun>=1 2:00
> -			-4:00	-	AST	2018 Apr
> +			-4:00	-	AST	2018 Mar 11 3:00
>  			-5:00	US	E%sT
>  
>  # British Virgin Is
> 


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