one o'clock

Lunch hour's end

One o'clock is the first hour after noon or midnight—1:00 on a clock.

Like other clock times, it serves as a reference point for direction: Enemy aircraft at one o'clock means to the right and slightly ahead, as if the speaker stood at the center of a clock face looking toward twelve.

timekeeping

watch

Portable timekeeping device

hourSixty-minute span
chimeMelodic bell sound
bellHollow resonating instrument

strike · hands · dial · digital · analog · timepiece · grandfather · cuckoo · tower · church

midday

lunchtime

Noon eating period

noonDay's exact middle
middayTwelve hours after midnight
luncheonFormal midday meal

siesta · break · meridian · noonday · lunch · afternoon · postmeridian · zenith · solar · sundial

nighttime

midnight

Twelve o'clock at night

lateNot on time
insomniaPersistent inability to rest
darknessTotal absence of light

quiet · stillness · nightshift · sleepless · witching · graveyard · lonely · bars · nightclub · starlight

Categories

hoursnoon, midnight, half hour, quarter hour, half past
clock positionsnoon, midnight, high noon
Timesmorning, afternoon, evening, night, noon

Opposites

position on the clock face

one o'clockseven o'clock

Specific hour designation

symbolic/cultural time markers

one o'clockmidnight

Twelve o'clock at night

twelve o'clock · noon · high noon · midday

day versus night (1 AM vs 1 PM interpretation)

one o'clockbroad daylight

Fully visible daytime conditions

Family

one, clock, ones, o'clock, clocks, clockwork, clockwise, anticlockwise

Familiarity: Top 10,000
Profile: Known to kids · Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G