Well the sun decided to make an appearance after all and I'll get to wear the Zelos Horizons GMT after all. It's the last watch that is still on DST because being lazy I adjust the time when DST begin or end only when I wear a watch, and it's been a while since I wore the Horizons.
But how do other people do it? Are you rushing to do it at once, no matter how many watches you own or how long it will take? Or are you like me and let it take as long as it's needed even if it means that some watches will be out of synch for close to a month?