O4 · IGWN Computing and Software · GitLab

Maintenance will be performed on git.ligo.org, containers.ligo.org, and docs.ligo.org on Tuesday 17 March 2026 starting at approximately 1200 EDT (1600 UTC). It is expected to take around 30 minutes and there will be several periods of downtime throughout the maintenance. Please address any comments, concerns, or questions to the helpdesk.

O4

The Fourth Observing Run.

Start and end dates taken from https://observing.docs.ligo.org/plan/ (accessed 14/Nov/2024).

Usage : This milestone should be used for issues to be completed 'during O4'. For the milestone that represents 'before O4 starts', please see https://git.ligo.org/groups/computing/-/milestones/1.