Joe Rao - June Solstice 2023: How twilight zones affect day length:
https://www.space.com/26402-summer-solstice-twilight-july-skywatching.html
#SummerSolstice #Solstice #TwilightZones #CivilTwilight #NauticalTwilight #AstronomicalTwilight #Twilight #Darkness #Astronomy