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setting the start day of the week as Sunday

Sara Uckelman
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December 20, 2024

For the last 2 years or so, when I set a due date on a Trello card, the first day of the week has been Sunday, not Monday.  This is what I want.  A few days ago, something changed, and now the start day of the week is Monday, not Sunday.  This is not what I want.  The guidance at

https://support.atlassian.com/trello/docs/turning-on-international-timedate-formatting/

is not accurate.  My language is set to English (US), and yet the start day of the week is Monday.  I have switched from English (US) to English (UK) with no change in start day; I have switched back, with no change.

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Augusto Lisboa
Atlassian Team
Atlassian Team members are employees working across the company in a wide variety of roles.
December 23, 2024

Hi, Sara! Sometimes those changes take some time to occur, can you please switch to the US again and check?

jaqabyte
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October 27, 2025

I don't want American spelling but I want the week start day as Sunday to align with my calendars. Otherwise I keep making mistakes as I think Friday is the second last day on the calendar. Why does the US only get to have accurate calendars?? Can I PLEASE change my calendar to starting on a Sunday (as Sunday is the 1st day of the week DOH) but leave my spelling as UK.

Luciana Munhoz
Atlassian Team
Atlassian Team members are employees working across the company in a wide variety of roles.
October 31, 2025

Hi! Welcome to the community. Thanks for your feedback! I checked, and I see we have a similar request for that suggestion that you can access here: https://jira.atlassian.com/browse/TRELLO-597

I have also added this post as an internal comment to this request so that way our engineering team can reference it and also use it to help align priority. I would also recommend you visit that suggestion, log in with your Atlassian account, and click *Start watching this issue* on the right panel. This will help our product and engineering team understand more about which functionalities our users are interested in. Also, when the request is updated by our product team, you'll be notified via email.

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jaqabyte
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October 31, 2025

Thank you @Luciana Munhoz :)

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