Fafurion on US Kurinnaxx, had the week off work and wanted to level solo in ZF/Mara, I hit the instance cap yesterday from 8 AM to 4 PM EST. I log in today and it’s still telling me I’ve entered too many instances recently. It’s 10 AM EST, it’s been over 24 hours since my first pull, 18 hours since my last.
I believe it’s actually a rolling lockout, meaning that 24 hours after you’ve entered the instance, that instance falls off. That’s the way all the other instance timers work (10/hour, etc.).