Ran into the "fun" around future dates big time at my previous company. We allowed users to define schedules which would control light, temperature, co2, irrig

Ran into the "fun" around future dates big time at my previous company. We allowed users to define schedules which would control light, temperature, co2, irrigation, etc for greenhouses. Those schedules would load into on premise controllers and run for weeks or months. They might be built by a user in one timezone and deployed to multiple facilities in different timezones. They often ran across DST boundaries, and some users wanted them to follow "wall clock time" while others wanted to ignore DST to match the behavior of legacy control systems.