Was there a way to keep time in 23rd century BC?

by Gehorchen
Searocksandtrees

hi! This might be more of a question for /r/AskAnthropology, but while you're here, could you help the historians out by specifing

  • whether you're interested in time of day (i.e. a kind of clock) or time of year (i.e. a kind of calendar or way of identifying solar/lunar/other positions)?

  • which part of the world you're interested in, e.g. neolithic Britain, ancient Egypt, ancient China...?

thanks!