I always thought this format was visually appealing and easy to understand when it was set up on the previous version of the Harbinger servers so yay for its return! =D
Guild Name: The Silver Order
Imperial or Republic: Republic
Boss Killed: The Dread Guard
Date/Time Killed: 10:40pm PST, September 29
Screenshot or Video link: Kill screenshot with lockout and timestamp
and (ninja edit) screenshot with nameplates
Considering it's only been a week (i.e., lockouts have only reset once), I think the time remaining on the lockout screen should corroborate the time killed.