Deployments/Yearly calendar
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 calendar for 2023.
| What | When | Deployment decision | What happened? |
|---|---|---|---|
| New Year's Day | Mon 1 Jan | No deploys | ✅ No MW deploys |
| Martin Luther King Jr Day | Mon 15 Jan | No UTC Late backport window | 2× MW deploys |
| U.S. Presidents' Day | Mon 19 Feb | No UTC Late backport window | ✅ No MW deploys |
| Northward Switchover: Services + Traffic | Tue 19 Mar | Deployments run as normal. Switchover window: 14:00-15:00 UTC | — |
| Northward Switchover: Mediawiki | Wed 20 Mar | Deployments run as normal. Switchover window: 14:00-15:00 UTC | — |
| Earth Day | Mon 22 Apr | No deploys | ✅ No MW deploys |
| U.S. Memorial Day | Mon 27 May | No UTC Late backport window | — |
| Juneteenth | Wed 19 Jun | No UTC Late backport window | — |
| Fourth of July | Thu 4 Jul | No UTC Late backport window | — |
| U.S. July Holiday | Fri 5 Jul | No deploys (not that there are ever deploys on Friday) | 2× MW deploys |
| International Day of the World’s Indigenous Peoples | Fri 9 Aug | No deploys (not that there are ever deploys on Friday) | ✅ No MW deploys |
| U.S. Labor Day | Mon 2 Sep | No UTC Late backport window | — |
| Southward Switchover: Services + Traffic | Tue 24 Sept | Deployments run as normal. Switchover window: 14:00-16:00 UTC (target time: 15:00 UTC) | — |
| Southward Switchover: Mediawiki | Wed 25 Sept | Deployments run as normal. Switchover window: 14:00-16:00 UTC (target time: 15:00 UTC) | — |
| Columbus Day (also Indigenous Peoples' Day) | Mon 14 Oct | No UTC Late backport window | — |
| Veterans' Day | Mon 11 Nov | No UTC Late backport window | |
| Developer Experience Offsite | Mon 09 Dec–Fri 13 Dec | No Train (1.44.0-wmf.7), backports as normal | |
| End of Year Holiday | Tues 24 Dec – Wed 1 Jan | No Train (1.44.0-wmf.9 & .10) or deploys | |
| 1st week of 2025 (silent work week (if the WMF keeps quiet week)) | Tues 06 Jan, 2025 – Thu 08 Jan, 2025 | No Train (1.44.0-wmf.11) |