Other hyponyms of time of day include
high noon,
midday,
noon,
noonday,
noontide,
twelve noon,
mealtime,
late-night hour,
midnight,
small hours,
bedtime,
closing time,
aurora,
break of day,
break of the day,
cockcrow,
dawn,
dawning,
daybreak,
dayspring,
first light,
morning,
sunrise,
sunup,
sundown,
sunset,
crepuscle,
crepuscule,
dusk,
evenfall,
fall,
gloam,
gloaming,
nightfall,
twilight,
none,
happy hour,
rush hour,
zero hour,
canonical hour.