Do you mean ‘overdag’? To my experience that is after the sun rises and before it’s down. And because the earth rotates and rotates around the sun that is always a different timeframe
Sun Events is an app the has several triggers to certain positions of the sun. It make use of suncalc from ‘Vladimir Agafonkin’. The following triggers are possible:
sunrise (top edge of the sun appears on the horizon)
sunrise ends (bottom edge of the sun touches the horizon)
morning golden hour (soft light, best time for photography) ends
solar noon (sun is in the highest position)
goldenHour (evening golden hour starts)
sunset starts (bottom edge of the sun touches the horizon)
sunset (sun disappears below the horizon, evening civil twilight starts)