Not sure how to bring evidence for this, but while warring, me and another person in my faction noticed that our timers for war were out of sync by at least 30 seconds. This lasted throughout the war (we noticed this in both the pre-war countdown and the duration countdown). Normally, it wouldn’t matter, except that those 30 seconds are very important for tower grabbing.
This is not just a feeling, mind you. For example, his screenshot showed his war timer countdown at 47 something minutes while mine was still in the 48 minutes zone. Anyone else noticed their countdowns being out of sync with their war parties as well?