I'm just checking the tags related to "time stuff" (excluding "calendars" and the like). My current "check" brought me to:
- alarm (x51) -- alarms generated either by the built-in Clock app or by third-party clock replacement apps
- clock (x33) -- Clock related issues -- whith "Clock" iin the sense of "displaying the current time"
- date-and-time (x7) -- issues with date/time formats, adjusting time, time sync, daylight saving
- time-zones (x10) -- issues with time zones
(I just updated their corresponding tag-wikis; above descriptions are taken from the "new wikis"). But then, while checking the tagged questions, I stumbled upon timer (x3). Do we really need this as a separate tag -- or could it be "synonymized" to either
alarm ("countdown-timer") or