Long Journeys, Flights, Rugby Matches, Meetings, Eggs, holding my breath in the bath…
Cooking. I always use the chrono which is why 30 minute chronos are no use to me as they don't cover roasts and stews.
I think I favour the symmetry of two sub dials but strangely I can only recall owning one. I have though had quite a few with three and they all had the layout of the only one currently in my collection.