time of day
type of occurrence
midnight
12 o'clock at night; transition time period from one day to the next
daytime
period on any given point of the planet's surface during which it experiences natural illumination from sunlight
noon
time when the Sun reaches its apparent highest point in the sky
afternoon
time of the day between noon and evening
wee hours
very early hours of the morning, between midnight and sunrise/dawn
civil twilight
times of the day when the sun is 0 to 6 degrees below the horizon
night
period from sunset to sunrise in each twenty-four hours
forenoon
part of the day between morning and noon
dawn
time that marks the beginning of the twilight before sunrise
Moonlight night
night on the Moon
overnight hours
time of the day from shortly before midnight to sunrise, with an emphasis on nighttime
evening
period of the day between afternoon and nighttime
sunset
daily disappearance of the Sun below the western half of the horizon
sunrise
instant at which the upper edge of the Sun appears over the eastern horizon in the morning
bedtime
time of transition from wakefulness to sleep
red sky at morning
natural phenomenon, whitish or rosy light during twilight or before sunset
witching hour
time of day when the devil, demons or ghosts are supposed to come out
hour of the wolf
Time between three and four in the morning when many people - even those who are not sleep-deprived - wake up
morning
period of time from sunrise to noon
twilight
illumination of the Earth's lower atmosphere when the Sun itself is not directly visible because it is below the horizon
dusk
darkest stage of twilight, or at the very end of astronomical twilight after sunset and just before night
astronomical dawn
time of dawn for Muslims which allows them to perform the dawn prayer and fast
early morning
time between midnight and sunrise, with an emphasis on morning