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.
| 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 |