Difference between revisions of "30W Time Zone Rule"
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In affected areas (east of -30° longitude), please add <CODE><NOWIKI>{{pre30w}}</NOWIKI></CODE> to old expedition pages from '''May 21-23, 2008'''. (May 24-26 are unaffected due to the weekend and the [[Dow holiday]] for Memorial Day.) | In affected areas (east of -30° longitude), please add <CODE><NOWIKI>{{pre30w}}</NOWIKI></CODE> to old expedition pages from '''May 21-23, 2008'''. (May 24-26 are unaffected due to the weekend and the [[Dow holiday]] for Memorial Day.) | ||
| + | |||
| + | == Terminology == | ||
| + | |||
| + | The following terms may be found referring to the adjusted coordinates for locations east of W30: | ||
| + | * W30 adjusted coordinates | ||
| + | * W30 coordinates | ||
| + | * Eastern coordinates | ||
| + | Coordinates for those locations west of W30 may be found using these terms: | ||
| + | * Non-W30 coordinates | ||
| + | * Western coordinates | ||
== See also == | == See also == | ||
Revision as of 17:52, 18 September 2009
Announced Saturday, May 24, 2008 03:34 UTC
There’s been a small change to the algorithm to deal with time zones. This change does not affect anyone in North/South America (excluding eastern Greenland), does not affect Saturday meetup times anywhere, and does not change any currently known upcoming meeting times. The change:
For every location east of Longitude -30 (Europe, Africa, Asia, and Australia), use the Dow opening from the previous day — even if a new one becomes available partway through the day.
Put differently (the same functionally for everywhere except islands in the mid-Atlantic):
Consider any Dow openings published after noon local time to have occurred on the next day.
This is necessary to deal with time zone problems. For a lot of Europe, the Wednesday Dow opening was learned near sundown Wednesday, which meant they couldn’t use it to get to daytime meetups. For east Asia, they had to visit weekday locations the next day. A bunch of solutions were discussed, and I decided this was the cleanest.
The map program has been updated with this rule. The first coordinates that will be affected by it are for Tuesday, May 27, 2008. Again, this does not affect anyone in the Americas.
Implementations
Authors of existing implementations are encouraged to update them before 12:00 UTC on Monday, May 26 so that your users in the easternmost time zones can have a smooth transition. Once updated, add {{30w compliant|yes=1}} to the Implementations page.
Announcement Templates
In affected areas (east of -30° longitude), please add {{pre30w}} to old expedition pages from May 21-23, 2008. (May 24-26 are unaffected due to the weekend and the Dow holiday for Memorial Day.)
Terminology
The following terms may be found referring to the adjusted coordinates for locations east of W30:
- W30 adjusted coordinates
- W30 coordinates
- Eastern coordinates
Coordinates for those locations west of W30 may be found using these terms:
- Non-W30 coordinates
- Western coordinates
