Systematic issues in NIA's in-game events for the last 6-8 times every time
If I remember it correctly the last 6-8 times NIA's in-game events have had some kind of issues every time: Game actions not counting for Medal, it takes 1-2 hours from event start until actions are counted, etc.
From the latest release notes 2.77.1:
• Fixed: The C.O.R.E. renewal time was off by up to 1 hour.
Maybe NIA's "in-game event time" is also off by hour or two ?