File talk:First Day of Week World Map.svg

Distinction

This map should probably clearly distinguish the first day of the work week (i.e. the day after the weekend) from the first day column shown in tabular calendars – like CLDR does on which data this map should probably rely. Also see File talk:Week Holidays World Map.svg. — Christoph Päper 06:48, 10 June 2016 (UTC)

Weekday country groups (as of CLDR 37 beta)

Description	Country codes
Ugandan	UG
default, civil	001 AD AI AL AM AN AR AT AX AZ BA BE BG BM BN BY CH CL CM CR CY CZ DE DK EC EE ES FI FJ FO FR GB GE GF GP GR HR HU IE IS IT KG KZ LB LI LK LT LU LV MC MD ME MK MN MQ MY NL NO NZ PL RE RO RS RU SE SI SK SM TJ TM TR UA UY UZ VA VN XK
Indian	IN
Christian	AG AS AU BD BR BS BT BW BZ CA CN CO DM DO ET GT GU HK HN ID JM JP KE KH KR LA MH MM MO MT MX MZ NI NP PA PE PH PK PR PT PY SG SV TH TT TW UM US VE VI WS ZA ZW
Hebrew, Muslim	IL SA YE
Muslim	AE BH DZ EG IQ JO KW LY OM QA SD SY
Persian	IR
Afghan	AF
Djiboutan	DJ
Maldivian	MV

Day-of-week data: workdays and weekends

Description	Mon	Tue	Wed	Thu	Fri	Sat	Sun	1st dow	break		1st	2nd	3rd	4th	5th	6th	7th
Ugandan	1	2	3	4	5	6	7	Mon	Sun		Mon	Tue	Wed	Thu	Fri	Sat	Sun
default, civil	1	2	3	4	5	6	7	Mon	Sat	Sun	Mon	Tue	Wed	Thu	Fri	Sat	Sun
Indian	2	3	4	5	6	7	1	Sun	Sun		Sun	Mon	Tue	Wed	Thu	Fri	Sat
Christian	2	3	4	5	6	7	1	Sun	Sat	Sun	Sun	Mon	Tue	Wed	Thu	Fri	Sat
Hebrew, Muslim	2	3	4	5	6	7	1	Sun	Fri	Sat	Sun	Mon	Tue	Wed	Thu	Fri	Sat
Muslim	3	4	5	6	7	1	2	Sat	Fri	Sat	Sat	Sun	Mon	Tue	Wed	Thu	Fri
Persian	3	4	5	6	7	1	2	Sat	Fri		Sat	Sun	Mon	Tue	Wed	Thu	Fri
Afghan	3	4	5	6	7	1	2	Sat	Thu	Fri	Sat	Sun	Mon	Tue	Wed	Thu	Fri
Djiboutan	3	4	5	6	7	1	2	Sat	Sat	Sun	Sat	Sun	Mon	Tue	Wed	Thu	Fri
Maldivian	4	5	6	7	1	2	3	Fri	Sat	Sun	Fri	Sat	Sun	Mon	Tue	Wed	Thu

— Christoph Päper 07:30, 3 April 2020 (UTC)

Ireland

CLDR disagrees in Ireland's case. — GeneralFailer (talk) 21:15, 27 November 2016 (UTC)

I was at first confused by this. But Ireland was changed from Sunday to Monday in CLDR v34 on 2018-10-15. So anyone reading this after this date, this is why Ireland is marked as Monday. The map is as of now (2021-02-20) accurate to the latest CLDR data, v38.1 released 2020-12-14.

Here's a link to Territory information – CLDR v38.1 for those who want to confirm — Liggliluff (talk) 11:11, 20 February 2021 (UTC)

The O'Briens calendar in the local book store has Monday first, as well does any calendar and timetable I've come across in over 10 years living in Ireland. Windows 7 with IE setting also has Monday first. Linux, though, causes constant trouble (colleagues telling you to meet Wednesday the 28th this week and you having to ask whether they mean Tuesday the 28th or Wednesday the 1st). One exception was a room booking page printed from Office. I'll look into contributing the the CLDR some other day. Jowagner (talk) 14:17, 27 February 2017 (UTC)

First Day of Week in China (CN)

The most recent revision of the file (2020-03-15) changed the color of China (CN) from blue (firstDay = Monday) to orange (firstDay = Sunday). It is not accurate, as per GB/T 7408-2005 (which is the same as ISO-8601), Monday is the first day of the week. In fact, Chinese language uses numbered days of the week, so "星期一/周一" (Monday) literally means "First Day of the Stellar Period / Week".

I tried to figure out why the color changed, so I downloaded both revisions and used a text editor to examine the comments in the SVG files. I found out that the reference link for the CLDR data changed from github.com to unicode.org. However, after checking the Git history of the XML file hosted on GitHub, I could confirm that both sources state that Sunday is the first of week in China at least since 2004.

Now I am confused:

• Why do the standard (GB/T 7408-2005) and the CLDR contradict each other? (Also I lived in China for more than 20 years. I know the first day of week is Monday.)
• Why was China colored blue in the first place (as in earlier revisions of the file), if the both revisions of the SVG file used the same source (CLDR)?

Wzyboy (talk) 09:59, 2 April 2020 (UTC)

I filed a bug. — Christoph Päper 10:18, 2 April 2020 (UTC)

Thank you. I found more similar issues on CLDR Atlassian:

• CLDR-13648 (2020-03-11)
• CLDR-11510 (2019-01-10)

But CLDR team does not respond to these issues. I found that w:GNU C Library team has fixed this issue downstream in 2019. Which means (almost) all Linux distributions have fixed this issue as well. I tried this out on Arch Linux:

$ LC_TIME=en_US.UTF-8 cal
     April 2020     
Su Mo Tu We Th Fr Sa
          1  2  3  4
 5  6  7  8  9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30      
                    
$ LC_TIME=zh_CN.UTF-8 cal
      四月 2020     
一 二 三 四 五 六 日
       1  2  3  4  5
 6  7  8  9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30         

$ LC_TIME=en_DK.UTF-8 cal
     April 2020     
Mo Tu We Th Fr Sa Su
       1  2  3  4  5
 6  7  8  9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30         

(The first column of zh_CN header ("一") reads "Monday". Denmark (DK) is for comparison because DK uses ISO-8601 as well.)

Also, in Windows 10, if locale is set to China (CN), the "first day of the week" is automatically set to Monday as well.

Should we fix this issue here on Wikipedia Commons as well? -- Wzyboy (talk) 21:41, 3 April 2020 (UTC)

Since the diagram is not generated automatically from CLDR data, we could go ahead and implement the fix, because it is only a matter of time, apparently, until the source will be changed as well. — Christoph Päper 07:20, 23 April 2020 (UTC)

 Done CLDR 42 changed the entry for China and the image has already been updated. — Christoph Päper 09:24, 5 December 2022 (UTC)

How to update this map

This map displays the data in this table, which represents which day of the week goes first on a calendar in a given territory

https://unicode-org.github.io/cldr-staging/charts/latest/supplemental/territory_information.html

If you think a country is represented inaccurately, you're probably right if this map is to be believed

https://www.timeanddate.com/calendar/days/first-day-of-the-week.html

so please get the people at the Unicode Consortium to update the data. You can see how to do this effectively by how this person updated the data for Australia. You need to open an issue on their Atlassian page, with copious examples

https://unicode-org.atlassian.net/browse/CLDR-14795

and you need to make an edit to the data on GitHub

https://github.com/unicode-org/cldr/commit/edbff37707f4c82d5a2b136e5dd6f6d0dd61e951

Please also search for existing issues, for example there were many for China before it was switched to Monday: https://unicode-org.atlassian.net/browse/CLDR-10535?jql=text%20~%20%22First%20day%20of%20week%20china%22

Akeosnhaoe (talk) 10:22, 25 March 2022 (UTC)

Maldives - Friday

For anyone else confused/uncertain about the Maldives, CLDR really does say they start the week on Friday: current github link - <firstDay day="fri" territories="MV"/> - I cannot find any reliable sources supporting that other than CLDR (and a few unreliable websites with conflicting details), but that's the data origin. I hope that helps someone! --Quiddity (talk) 03:01, 5 July 2023 (UTC)