You seem to put very heavy emphasis on the precise recorded time of a recurring meeting in everyone's calendar. In my experience, this is mostly irrelevant: the

You seem to put very heavy emphasis on the precise recorded time of a recurring meeting in everyone's calendar. In my experience, this is mostly irrelevant: the time of a recurring meeting is often renegotiated when circumstances change for a big enough swathe of participants, such as schedule changes in the more northern/souther latitudes as winter&summer approach.