Funny; DST is exactly what made me doubt the rule of storing everything in UTC.<p>We&#x27;ve had a lot of problems with a platform that stores recurring events as UTC date + time delta (eg. 1 week). What the users want is an event that happens every week on a certain weekday and time, in their timezone - they don&#x27;t care if that falls on various times in UTC throughout the year.<p>Of course, that&#x27;s specific for recurring events&#x2F;schedules.