[ar0]

The German BSI (Federal Office for IT Security) quotes the advisory from CrowdStrike (which is behind their customer login portal) as saying you need to roll-back to snapshots prior to 04:09 UTC:

https://www.bsi.bund.de/SharedDocs/Cybersicherheitswarnungen...

So your Redditor saying 05:00 UTC seems to be close.

[terom]

https://old.reddit.com/r/crowdstrike/comments/1e6vmkf/bsod_e... quotes the CrowdStrike advisory verbatim, which has timestamps of 04:09 UTC for the problematic version and 05:27 for the reverted (good) version.