Just to throw another log on the fire, the in game mail said that maintenance shields would go up at 11:30PT… they ended up going up 90 minutes early.
Every season this comes up and every season we have new and inexperienced players that get caught by the update for the new season and being unable to finish because of maintenance shields. Now many people say that players should pay attention and not leave things to the last minute… I would argue why have a closing date that is misleading to players, in particular new players to Atlas who presumably PG would want to have a favorable experience.
Close the season on the Monday and like the main game season have a two day grace period for collecting your prizes and using your chests. Consistency between platforms is intuitive and there would be zero fall out from the players.