Why does the Fleet Arena Store refresh less times then all the others?

"Austin9370;c-1522574" wrote:
It doesn't. It's not on the same refresh cycle as the others. It refreshes more in the evening.

The others refresh every 6 hours, making that 4 times within a 24 hour period, but the Fleet Store only does it 3 times within a 24 hour period, 7pm-10pm, 10pm-12 midday and 12 midday-7pm.