Other hyponyms of unit of time include
day,
mean solar day,
solar day,
twenty-four hour period,
twenty-four hours,
night,
mean solar time,
mean time,
ephemeris time,
TDT,
terrestrial dynamical time,
terrestrial time,
TT,
month,
day,
sidereal day,
bell,
ship's bell,
60 minutes,
hour,
hr,
30 minutes,
half-hour,
15 minutes,
quarter-hour,
min,
minute,
quarter,
s,
sec,
second,
attosecond,
femtosecond,
picosecond,
nanosecond,
microsecond,
millisecond,
msec,
yuga,
Maha-Yuga,
Mahayuga.