https://historical-time.github.io/caa-chrono-sig/meetings/meeting-1/2025-10-27T10:00:00+01:00monthly0.5https://historical-time.github.io/caa-chrono-sig/meetings/meeting-2/2025-12-15T10:00:00+01:00monthly0.5https://historical-time.github.io/caa-chrono-sig/meetings/meeting-3/2026-02-16T00:00:00+00:00monthly0.5