astronomical_twilight()
Astronomical twilight
civil_twilight()
Civil twilight
day_astronomical_twilight_length()
Length of astronomical twilight
day_civil_twilight_length()
Length of civil twilight
day_length()
Length of day
day_nautical_twilight_length()
Length of nautical twilight
nautical_twilight()
Nautical twilight
sun_rise_set()
Sun rise/set times