War
Immediate Effects
-10% Attack Time
After 12 Hours
-20% Attack Time
After 24 Hours
No Distance Penalties for Attacks
I am pretty sure it should go to -25% Attack time after 12h... As we have 12h base attack time in War these days, do we not?

That is to say, I believe base Attack time in War(after 24h) would be calculated as;
16 * 0.75 = 12
not
16 * 0.8 * 0.9 = 11.52, or even 16 * 0.75 * 0.9 = 10.8

... and at 12h it would also be;
16 * 0.75 = 12
not
16 * 0.8 * 95 = 12.16, or 16 * 0.75 * 0.95 = 11.4 (half of the island penalty, assuming this would slide in as well)

IF a War was intra-island, then I believe after 12h it would be;
16 * 0.9 * 0.75 = 11.4

I think somehow the -10% and "No Distance penalty" got mixed up here, and its kinda the same thing being accounted for twice... I am open to other interpretations, though