I've noticed that a few of us are getting 10.8 hour attack times instead of the standard 12 hour attack times (non tacticians and without any barracks). We are around 24 hours into our war.

Our KD has Ruby dragon on us and Onslaught ritual up. When war started, we had Godspeed ritual up which was around 20-24 hours away from expiry. I think we activated our Onslaught ritual 1 tick before the Godspeed ritual expired.
Enemy KD has no dragon and no ritual up. When war started, enemy KD had Godspeed ritual which was around 46 hours old and 100% destroyed by our abolish ritual spell, so effectively 2 hours into the war, they lost their ritual.

Can an admin/dev have a look and see what could be possibly causing the extra 10% lower attack time?

Your personal Support ID is 8D480508