The Imperial Calendar is the calendar used in the Empire. It consists of 12 months, each with 32 or 33 days, split into 8-day weeks, as well as 6 intercalendary days. For more information, see the hammerwiki entry on the subject.
Ascendant campaigns can view previous versions of their pages, see what has changed (and who did it), and even restore old versions. It's like having a rewind button for your campaign.
We've already been saving your edits, so if you
you will have instant access to your previous versions. Plus, you get a 15-day free trial, so there's nothing to lose.