File talk:World Time Zones Map.png

 

Protection

I've protected this page in response to a request.[1] If you object to the protected version, please discuss here. COM:OVERWRITE may be helpful as well as COM:MELLOW in reaching a consensus. I will remove protection once this occurs. Best wishes, Walter Siegmund (talk) 16:54, 23 April 2015 (UTC)

"de facto" boundaries

This: "The boundaries on this map show the de facto situation" ist just not true. There are several examples where the map doesn't show the de facto situation: de facto existing independent states are not shown as such (e. g. Taiwan oder Northern Cyprus), because they are not recognized by the vast majority of nations. At the same time Crimea is shown as part of Russia although the vast majority of nationes considers it a part of Ukraine. Furthermore the Falklands are provided with a note explaining their disputed status, whereas analogous notes are missing at other disputed territories. In short: the map is full of inconsequences. I think it should just show the "de jure" boundaries as they are recognised by the majority of states. If no consensus can be reached we should just have several different maps. --Voland77 (留言) 09:52, 7 August 2015 (UTC)

Time change

North Korea has changed its time to UTC+8:30. Please change.--owennson（Meeting Room聊天室、Certificates獎座櫃） 12:56, 8 August 2015 (UTC)

An updated version can be found at File:Standard_World_Time_Zones.png. --Michaeldsuarez (留言) 00:14, 11 August 2015 (UTC)

Morocco new timezone

Morocco has changed its timezone to UTC+1 [2]. --Kakahuete (留言) 10:55, 29 October 2018 (UTC)

Crimean border

The border line shown between Ukraine and Crimea has been discussed at en:Talk:Coordinated Universal Time. I repeat here my suggestion that the border should perhaps be shown as a brown line, the same as on the "border" with the Russian-controlled region in the east of Ukraine that also follows Russian timekeeping practices. Rosbif73 (留言) 15:02, 27 November 2019 (UTC)

Calculation of local/UTC time at the bottom

The method of calculating local time based on UTC and UTC based on local time at the bottom of the image is incorrect for the West. The method given for the East is correct for all timezones. E.g. using the West calculation, 09:00 in Brazil + -3 = 06:00, which is not the UTC time of the map. Similarly 12:00 UTC - -3 = 15:00, which is not the Brazil time of the map. +- = - and -- = + Yndajas (留言) 15:55, 9 March 2020 (UTC)

@Yndajas: Thank you for mentioning this error. The text at the bottom was based on an older version of the map, which used only positive numbers. In the current version, with positive and negative numbers, the same calculation should be used for all time zones. I removed the text for the west and moved the text for the east to the center, referring to all time zones. Heitordp (留言) 13:57, 27 March 2023 (UTC)

Inconsistent with boundaries

Why are some de facto/de jure conflicts marked and not others? The Falklands are marked, though they are administered by what much of the world considers their rightful owner. Meanwhile Crimea is labeled as part of Russia without even a note, though the international community recognizes it as part of Ukraine. And not a word on the disputed territories of the Levant or Taiwan. It's just very inconsistent. --Jtle515 (留言) 17:44, 25 March 2020 (UTC)

Source File?

I was wondering if there is some vector-based or multi-layer source file? How is everyone updating this? I am interested because I would like to create customized time zone maps representing certain sets of time zones. — Preceding unsigned comment was added by 2605:E000:1319:48DF:F06D:5C8E:9B91:C1CC (talk) 20:27, 4 July 2020 (UTC)

See SVG version I did. Still missing things. 72.53.104.28 15:42, 9 December 2021 (UTC)

Crimea's time zone is UTC+3

The time zone for Crimea should be UTC+3, not UTC+2 2600:1700:6180:6290:352A:57CD:881B:26EC 00:54, 16 April 2021 (UTC)

Also Abkhazia and South Ossetia, needs to be fixed too. As far as boundaries concerned, however, Crimea's border with uncontested part of Ukraine shall be dotted (rather than solid white line that was in earlier file), because its separation from the latter is contested. Unfortunately, this file is a PNG (rather than SVG), which makes it very hard to fix. Apparently, the map was just blanket override with CIA original, made without regard (albeit I don't think that it was deliberate, more likely by accident) of pre-existing consensus on these contentious areas. --Seryo93 (留言) 13:21, 17 April 2021 (UTC)

And you can see the federal subjects of Russia. 2600:1700:6180:6290:1CFC:2486:7896:2A48 18:07, 29 April 2021 (UTC)

For reference, the current CIA map is February 2021 https://www.cia.gov/the-world-factbook/maps/world-regional/ -- RockOfVictory (留言) 20:19, 28 April 2022 (UTC)

Missing British territories

There are a few British territories and crown dependencies that seem to have avoided being labelled on the map:

• Cayman Islands
• Montserrat
• Isle of Man
• Guernsey
• Jersey

It's odd that most are labelled but not these. Del_Usion23 (talk) 21:31, 17 November 2021 (UTC)

@Heitordp: Thanks for adding Montserrat and Cayman Islands to the map. Please could you add labels for the crown dependencies too? Many thanks Del_Usion23 (talk) 19:28, 27 March 2023 (UTC)

@Delusion23: Added. Heitordp (留言) 21:59, 27 March 2023 (UTC)

SVG version

I have started producing the svg version of the top right image. I am missing the countries' names. I have changed the projection to equirectangular. Work based on [time zones.svg|https://commons.wikimedia.org/wiki/File:World_time_zones.svg]

I have added a scheme for daylight saving. Unsure if it should not be only the darker colours and is -1 every typical and -0:30 for the specific Australian island.

PNG image

SVG file on 20211208

Known issue : White outline of Great Lakes, Titicaca Lake, and Victoria Lake; disputed territory dashed lines (see https://en.wikipedia.org/wiki/Talk:Time_zone for other note)

Change name of Sea

The Sea Name on the Right Side of South Korea is written as the Sea of Japan in the Picture. This is a historically critical issue. As a Common Document, request a change fairy. -> East Sea / Sea of Japan — 以上未签名的留言是由该用户加入的： Pandoly2 (留言 • 贡献) 04:24, 10 June 2022 (UTC)

Greenland changed timezone

to half way between Copenhagen and New York, see e.g. https://www.spiegel.de/wissenschaft/mensch/groenland-wechselt-die-zeitzone-kuenftig-naeher-an-europa-a-fc89ef19-855e-4ffa-894a-bb5b7d3e032d Fazhbr (留言) 20:38, 25 November 2022 (UTC)

@Fazhbr: The change is planned to occur on 26 March 2023. The map should be updated at that time. Heitordp (留言) 17:53, 28 December 2022 (UTC)

@Fazhbr: Since it was clarified that Greenland will continue to observe DST, the change in the time zone should be considered to occur on 29 October 2023. Until then Greenland observes UTC–3 with DST in UTC–2, and after that it observes UTC–2 with DST in UTC–1. This is how the tz database implemented the change. Since the map shows standard time without DST, Greenland should be changed on the map on 29 October 2023. Heitordp (留言) 08:07, 26 March 2023 (UTC)

Map needs updating now.[3] Del_Usion23 (talk) 18:45, 26 March 2023 (UTC)

@Delusion23: Please read my comment above. The article that you cited is incorrect, Greenland will not remain in UTC–2 permanently and it intends to continue observing DST every year. Currently it's observing UTC–2 as DST, but its standard time is still UTC–3. On 29 October 2023, it will change to standard UTC–2 with DST in UTC–1 for future years. Heitordp (留言) 22:48, 26 March 2023 (UTC)

The law was validated last saturday, so Greenland officially has shifted time zone. You are wrong. In the law it's written that the time zone is UTC-2 ([4]), but DST is suspended this year, only Ittoqqortoormiit uses DST this year while being in UTC-1 ([5]). And the map update in Northeast Greenland is incorrect, since only Danmarkshavn uses UTC-0, not the whole of Northeast Greenland. --Kenny McFly (留言) 07:28, 31 March 2023 (UTC)

@Kenny McFly: For most of Greenland, the law indeed says that the standard time zone became UTC–2 on 25 March 2023 at 22:00 and that DST is not observed. However, the government clarified that DST will be observed again starting in 2024,[6] so it is equivalent and simpler to consider that DST is observed in all years, and that the standard time zone will be changed to UTC–2 only on 29 October 2023 at 1:00 UTC. This is how the tz database implemented the change.[7][8] But if you insist, I can change the Wikipedia maps and articles to UTC–2 without DST now. In this case, after October 2023 this map that shows only standard time may remain unchanged, but other maps and articles that show DST will need another change, as DST will be observed again.

Thank you for providing the link to the order about Ittoqqortoormiit. I also found another order about Danmarkshavn and Thule Air Base:[9]

Danmarkshavn is not the only station that uses UTC. According to correspondence from the Dansk Polarcenter in 2001, all stations on the east coast north of Ittoqqortoormiit, namely Mestersvig, Zackenberg, Daneborg, Danmarkshavn and Nord, observe UTC.[10] Although this correspondence is old, the websites of Zackenberg[11] (which also coordinates with nearby Daneborg) and Station Nord[12] confirm that at least these stations still observe UTC. I haven't found more recent information about Mestersvig, but I assume that it also still observes UTC like the other stations in the area. In addition, a detailed map of time zones proposed by the Asiaq Greenland Survey to the government in 2016, representing the time zones observed at the time, shows the entire coast of the National Park in UTC, even the north coast.[13] Here in the Wikipedia maps I showed only the east coast of the National Park in UTC, because the north coast doesn't have any stations. Heitordp (留言) 03:18, 2 April 2023 (UTC)

@Kenneth Wehr and Delusion23: The tz database was adjusted to reflect how the law specifies it, UTC–2 with no DST in 2023. I changed the Wikipedia maps and articles accordingly. In 2024, they will need to be changed again to UTC–2 with DST. Heitordp (留言) 22:14, 5 April 2023 (UTC)

Kazakhstan capital

Kazakhstan capital city changed name back to Astana, so this needs updating in the map. Del_Usion23 (talk) 19:38, 28 January 2023 (UTC)

@Delusion23: It has been updated. Heitordp (留言) 08:10, 26 March 2023 (UTC)

Borders

@M.Bitton: I made several corrections and updates to the map, but you reverted my change. Was the problem only the disputed borders? May I redo the updates to the time zones and names only, without changing the borders? Heitordp (留言) 17:16, 27 March 2023 (UTC)

Of course you can redo the updates (without changing the borders). Best, M.Bitton (留言) 17:19, 27 March 2023 (UTC)

Ukraine, occupied regions

Is there any consensus or rule which justifies to put the occupied regions of Ukraine in the Russian time zone? The way it is now it looks to me like Wikipedia accepts/supports an annexation of these regions by Russia. Although this is "just" a map of time zones, it is of course also a political map. Skopien (留言) 09:04, 30 October 2023 (UTC)

That was discussed and is the reason why the description states "de facto". GPSLeo (留言) 18:38, 30 October 2023 (UTC)

@Skopien: This map does not support the annexation of these regions by Russia, as it still shows them as part of Ukraine. The white line on the map is the internationally recognized border between Russia and Ukraine. The red line is only the separation between time zones. The map shows these regions in UTC+3 because that is the time currently observed there. It's true that this time was imposed by Russia contrary to the law of Ukraine, but the map shows the time actually observed in each place regardless of laws. For example, it also shows some regions of Australia and Canada in the time that they actually observe even though it's contrary to the respective law. Heitordp (留言) 06:20, 31 October 2023 (UTC)

You say "the map shows the time actually observed in each place regardless of laws" which is one of several options that I feel are acceptable. But I feel it does not clearly state so in the description. Current only description towards this is "Map of current de facto time zones" which is a lot less clear to me than what you wrote. Maybe the following would be a better description: "Map of current de facto time zones, i.e. the map shows the time actually observed in each place regardless of laws". Skopien (留言) 14:17, 31 October 2023 (UTC)

For me the distinction between de facto and de jure is very clear. And I know that this is the time that will be written on my train ticket. But of course you are free to add the longer explanation you suggested to the description. GPSLeo (留言) 18:53, 31 October 2023 (UTC)

The Kuril Islands dispute

It's bizarre that the Kuril Islands dispute is the only territorial dispute explicitly mentioned on this map.

Perhaps it just shouldn't be mentioned? A cursory search finds nothing about Japanese time being used on the Kuril Islands.

Considering this map doesn't mention anything about the occupied regions of Ukraine, or the BIOT, or literally any other territorial dispute, I think it would be more appropriate to omit mention of the Kuril islands entirely. A Tree In A Box (留言) 23:06, 31 December 2023 (UTC)

@A Tree In A Box: The map also notes the disputes of the Falkland Islands and of South Georgia and South Sandwich Islands. The notes about territorial disputes that appear in this map are copied from the CIA map that was used as a basis. But I agree that it's better to remove the note about the Kuril Islands.

I see that you made a new file without the note, and replaced it the time zone article. I'm going to remove the note from the original file and restore this file in the article. Heitordp (留言) 04:39, 3 January 2024 (UTC)

Awesome. I wanted to do that but did not have the requisite privileges in Wikimedia Commons. A Tree In A Box (留言) 17:27, 4 January 2024 (UTC)

SVG version

I made an SVG version of the map. I made several changes compared to the current PNG version, such as using intermediate colors instead of stripes for areas that observe fractional hour offsets, and using stripes for areas that observe DST, labeled with their two UTC offsets. I think that this scheme makes more sense, so each color represents a UTC offset, and stripes with two colors mean that two offsets are used depending on the part of the year. I also adjusted some time zone boundaries around coasts, which are arbitrary, and listed the DST changing dates below the map. I always found it insufficient for maps of time zones to show only standard time without any DST information, because many locations observe standard time for less than half of the year.

I'd like to use this SVG version in articles, but since there are hundreds of pages that use the PNG version, I think that it should be maintained as well. I can make a PNG version of the SVG version and replace the file, but I don't know if it would satisfy the overwrite policy due to substantial changes. Any suggestions? Heitordp (留言) 19:22, 5 March 2024 (UTC)