User blog comment:CTheDragons/Best Buffing/@comment-36725602-20180830092422/@comment-25085701-20180831010441

Remember that you can cast that spell at any time during the day, but the party member's resets happen when they log in past their cron. So you can probably just form up a poll of 'when do people first log in to Habitica' and arrange to cast your buffs at different times during the day to cover as many people as possible.