Conversation

What is your favorite ‘clockless clock’, or way of marking time that is neither a clock (Ie artificial device specifically designed to tell time) nor a standard astronomical calendar cycle (days/week’s/month’s/seasons)? (examples: breath, trains passing by, Apple product days)
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Replying to
General level of visible activity (human and non-human), distribution and pattern of sounds (cars, birdsong, shouting, whatever).
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