on the Debug Toolkit page a time is given for the next possible certificate like :
The next non-renewal certificate for selfhost.eu will be issuable again on 2019-02-28T22:00:33.000Z
What time zone is this date/time? I need this info to get the correct time for my place.
I added a toggle for UTC/local timezone and moved away from ISO8601 to a more “human” date format. Might need to do a hard browser refresh to see it.