I see ... It may have Been a little later today as I checked at 14:45 last and saw the tick @ 15:13. Thanks for that info though Cori.
Also, if it wasn't obvious from the rest of this thread, the tick doesn't happen for all systems simultaneously. Just because you've seen one system change doesn't mean that others will have already, or indeed that the changes for that first system are actually complete.
So, once you've seen changes start wait 30 minutes or more and then check on things. That or be prepared for things to still be in flux. We've seen some weird things with faction states per system fluctuating until the tick had completed, possibly related to the system-specific states (War, Civil War, Elections) interacting with the others.