1. ABSOLUTE TIME
[Estimation, measurement, and record of time] Chronometry.
almanac, calendar, ephemeris; register, registry; chronicle, annals, journal, diary, chronogram.
[Instruments for the measurement of time] clock, wall clock, pendulum clock, grandfather's clock, cuckoo clock, alarm clock, clock radio; watch, wristwatch, pocket watch, stopwatch, Swiss watch; atomic clock, digital clock, analog clock, quartz watch, water clock; chronometer, chronoscope, chronograph; repeater; timekeeper, timepiece; dial, sundial, gnomon, horologe, pendulum, hourglass, clepsydra; ghurry.
chronographer, chronologer, chronologist, timekeeper; annalist.
calendar year, leap year, Julian calendar, Gregorian calendar, Chinese calendar, Jewish calendar, perpetual calendar, Farmer's almanac, fiscal year.