solar calendar
Year by sunlight
A solar calendar is a calendar system based on Earth's orbit around the sun, with the year tracking one complete revolution.
The Gregorian calendar used worldwide is a solar calendar, with 365 days plus a leap day every four years to account for the actual orbital period.
Contrasts with lunar calendars, which follow moon phases.
Named for a pope
- JulianRelating to a famous Roman
- leap yearCalendar with added day
- intercalationInsertion between existing elements
- timekeepingMeasuring duration's passage
ephemeris · zodiac · celestial · chronometry · UTC · GMT · sidereal · synodic
Recoiling metal spiral
- summerYear's warmest season
- autumnPost-summer cooling period
- winterYear's coldest quarter
- equinoxSun crosses celestial midline
cycle · annual · periodic · seasonal · climate · weather · midsummer · midwinter
Twelve-month duration
January · December · quarter · semester · fiscal year · intercalation · synchronization · standardization
Placing seeds in earth
- sowingPlanting for cultivation
- harvestGathering mature crops
- crop rotationAlternating field plantings yearly
- growing seasonTime crops can mature
frost dates · transplanting · pruning · irrigation · tillage · cultivation · fieldwork · agronomy
Summer's peak period
- StonehengePrehistoric megalithic circle
- BeltaneCeltic spring fire festival
- NowruzIranian New Year festival
- harvest festivalAutumn event thanking for crops
New Year · Saturnalia · pagan · seasonal celebration · ritual · ceremonial
Gregorian
Named for a pope
- JulianRelating to a famous Roman
- leap yearCalendar with added day
- intercalationInsertion between existing elements
timekeeping · ephemeris · zodiac · celestial · chronometry · UTC · GMT · sidereal · synodic · epoch
spring
Recoiling metal spiral
equinox · cycle · annual · periodic · seasonal · climate · weather · midsummer · midwinter · vernal
year
Twelve-month duration
date · January · December · quarter · semester · fiscal year · intercalation · synchronization · standardization · time zones
planting
Placing seeds in earth
- sowingPlanting for cultivation
- harvestGathering mature crops
- crop rotationAlternating field plantings yearly
growing season · frost dates · transplanting · pruning · irrigation · tillage · cultivation · fieldwork · agronomy · phenology
Midsummer
Summer's peak period
- StonehengePrehistoric megalithic circle
- BeltaneCeltic spring fire festival
- NowruzIranian New Year festival
harvest festival · New Year · Saturnalia · pagan · seasonal celebration · ritual · ceremonial
- ancient calendarsLong Count
- timekeepingclock, watch, watches, clocks, timer
- calendarsalmanac, almanacs, planners, diaries, datebooks
- sky and timesun, moon, stars, planets, comet
- timekeeping traditionssundial, hourglass, water clock, clock tower, astronomical clock
- time traditionsdaylight saving, time zones, leap year, New Year countdown, clock watching
solar calendarlunar calendar
Timekeeping by moon phases
Islamic calendar · lunisolar calendar · Hebrew calendar · Chinese calendar · Hindu calendar
calendar, solar, calendars, solstice, solarize, solarization, solarized, solarizing