Wikipedia talk:WikiProject Time

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WikiProject Time (Rated Project-class)
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there is a place for solar mean time on List of tz database time zones table[edit]

There is a site called ( where you can get solar mean time for the tz database table. I thought it will be a great addition to the table so people can see or calculate time difference before standard time existed.

Example of how the table looks like after the figures are inserted.

CC Coordinates TZ Comments UTC offset UTC offset DST Solar mean time Notes
US +611305-1495401 America/Anchorage Alaska Time −09:00 −08:00 -09:59:36h
US +581807-1342511 America/Juneau Alaska Time - Alaska panhandle −09:00 −08:00 -08:57:41h
US +571035-1351807 America/Sitka Alaska Time - southeast Alaska panhandle −09:00 −08:00 -09:01:13h
US +593249-1394338 America/Yakutat Alaska Time - Alaska panhandle neck −09:00 −08:00 -09:18:55h
US +643004-1652423 America/Nome Alaska Time - west Alaska −09:00 −08:00 -11:01:38h
US +515248-1763929 America/Adak Aleutian Islands −10:00 −09:00 -11:46:38h
US +550737-1313435 America/Metlakatla Metlakatla Time - Annette Island −08:00 −08:00 -08:46:18h (talk) 13:13 20 January 2014 (UTC) 8:13am 1/20/2014 EST.

Category:Time – problem with alpha sorting[edit]

The sub-categories listed on the category page are not in alphabetic order. "S" and "T" are either side of "L" and when I piped one sub-cat to "M", that preceded "A"! I've reported it to the village pump technical page after trying unsuccessfully to solve it myself. If anyone here can work it out, please do. It could well be something simple but I can't see it. Thanks. BoJó | talk UTC 14:28, 3 September 2016 (UTC)

I'm not sure I follow the context of your comment, but perhaps my comment titled '"Rational" time format' referring to sorting, is relevant or even helpful.
Wikidity (talk) 00:19, 15 March 2017 (UTC)

Timeline heading style: 1900s vs. 20th century[edit]

Since the 20th century "officially" began on January 1, 1901 and ended on December 31, 2000, which timeline section heading style is best, i.e. most accurate and least confusing for readers?

-- M2545 (talk) 16:20, 18 September 2016 (UTC)

I'm not sure this is appropriate for this project (Wikipedia:WikiProject Timelines seems better), but 3 is the only choice. — Arthur Rubin (talk) 18:15, 16 October 2016 (UTC)
(I started a comment here and saved it half-done at 21:12, 9 July 2017‎ (UTC) to think about it. By the time I decided not to add it, Jc3s5h had added their comment of 21:24, 9 July 2017 (UTC). Fortunately, that comment doesn't depend on mine. Sorry for any confusion. --Thnidu (talk) 21:30, 9 July 2017 (UTC))
Nobody is in charge of this. Like other matters of English meaning and usage, it is a matter of consensus among English speakers. There is no clear consensus about whether 1900 is in the 19th or 20th century. Jc3s5h (talk) 21:24, 9 July 2017 (UTC)
@Jc3s5h: In informal usage, no; in precise usage, the standard is clear: 2000 ended the 20th century, and 2001 began the 21st. And an encyclopedia needs to be precise. (I remember the 20/21 dispute quite well, which is why I'm starting with it.)
From Century § Debate over century celebrations:
Strictly speaking, centuries begin with years ending with "01" as its last two digits and end with "00". In common usage however, a new century is often held to begin with significant digits rolling over meaning that centuries begin with "00" and end with "99". For example, strictly speaking, the 20th century runs from 1901-2000, but common usage refers it to be the years 1900 and 1999 presumably because they all contain years starting with "19".
[Two of the "viewpoints" discussed there]:
Viewpoint 2 ["the xxes" instead of "the xxth century"]
2 BC 1 BC 1 2 3 4 5 ... 96 97 98 99 100 101 102 103 ... 198 199 1900 1901 1902 ... 1998 1999 2000 2001 2002 2003 ... 2098 2099 2100 2101 2102 2103 ... 2198 2199
0s (99 years only) 100s 1900s 2000s 2100s
Viewpoint 3: In astronomical year numbering and popular culture
-2 -1 0 1 2 3 4 ... 96 97 98 99 100 101 102 103 ... 198 199 1900 1901 1902 ... 1998 1999 2000 2001 2002 2003 ... 2098 2099 2100 2101 2102 2103 ... 2198 2199
1st century 2nd century 20th century 21st century 22nd century
There is a year 0 in the astronomical year numbering. But popular culture doesn't notice that since there was no Gregorian year 0, this "1st century" would have only 99 years and not be a century at all.
--Thnidu (talk) 22:14, 9 July 2017 (UTC)
Wikipedia is not a reliable source. Jc3s5h (talk) 22:28, 9 July 2017 (UTC)

2016 Community Wishlist Survey Proposal to Revive Popular Pages[edit]

Magic Wand Icon 229981 Color Flipped.svg

Greetings WikiProject Time Members!

This is a one-time-only message to inform you about a technical proposal to revive your Popular Pages list in the 2016 Community Wishlist Survey that I think you may be interested in reviewing and perhaps even voting for:

If the above proposal gets in the Top 10 based on the votes, there is a high likelihood of this bot being restored so your project will again see monthly updates of popular pages.

Further, there are over 260 proposals in all to review and vote for, across many aspects of wikis.

Thank you for your consideration. Please note that voting for proposals continues through December 12, 2016.

Best regards, SteviethemanDelivered: 18:17, 7 December 2016 (UTC)

Format for List of tz database timezone section within tine in country x article.[edit]

Recently when I was editing the page Time in China, I noticed three of those zones are actually not listed in those regional files themselves but are instead in the backzone file for backward compatibility. I have moved them in a table ib a subsection, is this a good enough treatment? C933103 (talk) 17:27, 14 May 2017 (UTC)

Popular pages report[edit]

We – Community Tech – are happy to announce that the Popular pages bot is back up-and-running (after a one year hiatus)! You're receiving this message because your WikiProject or task force is signed up to receive the popular pages report. Every month, Community Tech bot will post at Wikipedia:WikiProject Time/Popular pages with a list of the most-viewed pages over the previous month that are within the scope of WikiProject Time.

We've made some enhancements to the original report. Here's what's new:

  • The pageview data includes both desktop and mobile data.
  • The report will include a link to the pageviews tool for each article, to dig deeper into any surprises or anomalies.
  • The report will include the total pageviews for the entire project (including redirects).

We're grateful to Mr.Z-man for his original Mr.Z-bot, and we wish his bot a happy robot retirement. Just as before, we hope the popular pages reports will aid you in understanding the reach of WikiProject Time, and what articles may be deserving of more attention. If you have any questions or concerns please contact us at m:User talk:Community Tech bot.

Warm regards, the Community Tech Team 17:16, 17 May 2017 (UTC)

My edits to 4 articles[edit]

I edited the articles Time in Massachusetts, Time in New Hampshire, Time in Maine, and Time in Rhode Island. These articles originally were one-paragraph articles mentioning failed bills to switch to Atlantic Time. I added an additional paragraph to each of these mentioning when solar noon was. I used the same two sources on all four pages: a map of the world showing how far ahead or behind solar noon is from regular noon and an interactive website where you can click anywhere and see when sunrise, sunset, and solar noon are. Should this information be included in the other states, or should my four edits be undone, or something else? HotdogPi 14:46, 27 July 2017 (UTC)

I think the term for what you're trying to express is local mean time. "Solar time" is likely to be interpreted as apparent solar time. Jc3s5h (talk) 16:02, 27 July 2017 (UTC)

Would you please explain the meaning of the '10' in the[edit]

week(date) = (ordinal(date) - weekday(date) + 10) / 7; A result table for the first week of January:

1 = 1 - 1 + 10 / 7
1 = 1 - 2 + 10 / 7
1 = 1 - 3 + 10 / 7
1 = 1 - 4 + 10 / 7
0 = 1 - 5 + 10 / 7 // previous year
0 = 1 - 6 + 10 / 7 // previous year
0 = 1 - 7 + 10 / 7 // previous year

Sorry for adding this to the talk page, I should have done the above before asking. Jon.busenkell (talk) 05:54, 4 February 2018 (UTC)

WikiProject collaboration notice from the Portals WikiProject[edit]

The reason I am contacting you is because there are one or more portals that fall under this subject, and the Portals WikiProject is currently undertaking a major drive to automate portals that may affect them.

Portals are being redesigned.

The new design features are being applied to existing portals.

At present, we are gearing up for a maintenance pass of portals in which the introduction section will be upgraded to no longer need a subpage. In place of static copied and pasted excerpts will be self-updating excerpts displayed through selective transclusion, using the template {{Transclude lead excerpt}}.

The discussion about this can be found here.

Maintainers of specific portals are encouraged to sign up as project members here, noting the portals they maintain, so that those portals are skipped by the maintenance pass. Currently, we are interested in upgrading neglected and abandoned portals. There will be opportunity for maintained portals to opt-in later, or the portal maintainers can handle upgrading (the portals they maintain) personally at any time.


On April 8th, 2018, an RfC ("Request for comment") proposal was made to eliminate all portals and the portal namespace. On April 17th, the Portals WikiProject was rebooted to handle the revitalization of the portal system. On May 12th, the RfC was closed with the result to keep portals, by a margin of about 2 to 1 in favor of keeping portals.

There's an article in the current edition of the Signpost interviewing project members about the RfC and the Portals WikiProject.

Since the reboot, the Portals WikiProject has been busy building tools and components to upgrade portals.

So far, 84 editors have joined.

If you would like to keep abreast of what is happening with portals, see the newsletter archive.

If you have any questions about what is happening with portals or the Portals WikiProject, please post them on the WikiProject's talk page.

Thank you.    — The Transhumanist   07:58, 30 May 2018 (UTC)

RFC: Explain obsolete nature of GMT in the lead of "Greenwich Mean Time"?[edit]

Please see Talk:Greenwich Mean Time#RFC: Explain obsolete nature of GMT in the lead? Jc3s5h (talk) 23:06, 11 September 2018 (UTC)