Etiquette proposal: if you invite someone from another #timezone to a teleconference, the onus is on you to present all times in their local timezone, rather than your own - that is, the person asking should bear the labor of timezone conversions, not the person being asked.
@pluralistic My experience as a UX researcher got me doing this pretty quickly. Swapping in local timezone reduces a barrier to getting all meeting participants to show up at the same time. It's not only a thoughtful action, it's an effective one too!