Maintenance for the week of January 20:
• PC/Mac: No maintenance – January 20
• NA megaservers for maintenance – January 22, 4:00AM EST (9:00 UTC) - 9:00AM EST (14:00 UTC)
• EU megaservers for maintenance – January 22, 9:00 UTC (4:00AM EST) - 14:00 UTC (9:00AM EST)
Ah, so that's what happened! I caught one of the other international streams a little later in the day, and there seemed to be an unannounced stream on the FemaleLegends channel at the same time the UK stream was scheduled for, which featured Gina Bruno and Anna Erlandsson from Bethesda, and which had its own Ouroboros Crate drops campaign.