Deployments/Yearly calendar

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Below is an extended forecast for the days on which deployment slots on the calendar won't be made and weeks in which the deployment train will not run.

Calendar

This is a naïve estimate based on the idea that any WMF holiday that does not fall on a Monday or a Friday makes the week a non-train week.

See also the calendars for 2022 and for 2024.

Deployment disruptions 2023
What When Deployment decision What happened?
New Year's Day Mon 2 Jan No deploys No MW deploys
Martin Luther King Day Mon 16 Jan No deploys 1× Emergency MW deploy and 1× No-op
Presidents' Day Mon 20 Feb No deploys 6× MW deploys
Earth Day (observed) Fri 21 Apr No deploys (not that there are ever deploys on Friday) 1× MW deploys
Memorial Day Mon 29 May No deploys No MW deploys
Juneteenth / RelEng deep work week Mon 19 Jun No Train, and no deploys Mon 19 Jun 9× MW deploys
WMF Holiday Mon 3 Jul No UTC Late backport window No late-UTC MW deploys
Fourth of July Tue 4 Jul No UTC Late backport window 3× late-UTC MW deploys
International Day of the
World’s Indigenous Peoples
Wed 9 Aug No Train, and no deploys that day 3× MW deploys
Labor Day Mon 4 Sep No deploys No MW deploys
Indigenous Peoples' Day Mon 9 Oct No deploys 2× MW deploys
Veterans' Day Fri 10 Nov No deploys (not that there are ever deploys on Friday) No MW deploys
Deployment freeze discussion reminder Mon 13 Nov Open discussion with deployers and stakeholders about backports week of Dec 18 (and partial weeks at the end of the year going forward) wikitech-l announcement
Thanksgiving
+ Day after Thanksgiving
Thu 23 & Fri 24 Nov No Train, and no deploys those days
Release Engineering Offsite Mon 04 Dec–Fri 08 Dec No Train
End of Year Holiday Mon 25 Dec–Mon 1 Jan No Train or deploys