I just complete a TPAC last month with pretty much no stops inbetween (there was a Dutch Harbour but that was cancelled and a stop in Sitka instead, and stops in Hokkaido).

Time change was gaining an hour overnight every day on the TPAC crossing for pretty much for ~7-8 straight days. By contrast, I heard that the eastbound on the same ship loses an hour overnight (presumably so pax are awake to spend more money on a non all-inclusive) which was bad for pax and more importantly, the crew.