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All Calendars Now
Date converter
Pick any day on the common (Gregorian) calendar and read it at once in every system this site knows — the living calendars of faith and state, the cyclical and astronomical reckonings, the counts machines keep, and the calendars of invented and fictional worlds. Everything is worked out in your browser; nothing is sent anywhere.
Religious & Cultural
11 calendarsBaháʼí (Badíʿ)
19 months of 19 days · from Naw-Rúz (approx.)
Buddhist
Years counted from the Buddha's passing
Chinese
Lunisolar · zodiac rolls at Lunar New Year
Coptic
Calendar of the Egyptian church
Ethiopian
Ge'ez calendar · ~7–8 years behind
Hebrew
Lunisolar · in use since antiquity
Indian National (Saka)
India's official civil calendar
Islamic (Hijri)
Purely lunar · Umm al-Qura
Korean (Dangi)
Lunisolar · years counted from Dangun, 2333 BCE
Persian (Solar Hijri)
Solar · new year at the spring equinox
Vikram Samvat
Bikram Sambat · official in Nepal, counted from 57 BCE
Cycles & Seasons
5 reckoningsAkan Day-Names
Ghana's day-name tradition · part of a 42-day adaduanan
Balinese Pawukon
210 days · ten weeks turning at once
Hawaiian (Kaulana Mahina)
Thirty named moon-nights, each with its own work and kapu
Igbo
A four-day market week · seven weeks a month, thirteen months
Noongar Seasons
Six seasons of southwestern Australia, read from country
Civil & Historical
4 calendarsAstronomical
5 reckoningsAztec (Mexica)
Xiuhpōhualli & Tōnalpōhualli · the Caso correlation
Julian Day Number
Astronomers' continuous day count · itself a running clock
Maya Calendar Round
Tzolk'in × Haab' · repeats every 52 years
Maya Long Count
Mesoamerican · GMT correlation
Sidereal Time
Greenwich Mean Sidereal Time · itself a running clock
Astrology
5 signsChinese Zodiac
The year's animal & element · a sixty-year cycle
Mayan Day-Sign
The Tzolk'in nawal · the day-sign said to shape its character
Planetary Hour
Classical astrology · the planet ruling this hour (sunrise ≈ 6am)
Sidereal Zodiac
Vedic (Jyotiṣa) · ~24° behind the tropical, for precession
Western Zodiac
Tropical Sun sign · where the Sun rides the ecliptic
Computer & Digital
4 countsInvented Reckonings
7 experimentsDecimal Time
French Revolution · 10 h × 100 min × 100 s
Discordian
Erisian parody · five 73-day seasons · years YOLD, from 1166 BCE
French Republican
Calendar of 1793 · equinox-timed (approx.)
Holocene (Human Era)
Gregorian + 10,000 · one count for all of civilization
International Fixed
13 months of 28 days · Kodak ran on it until 1989
Phantom Time
Illig's fringe claim that 614–911 AD were forged (widely debunked)
The World Calendar
Four equal quarters · nearly adopted by the League of Nations
Far Futures
4 worldsElder Days
3 worldsOther Worlds
8 worldsDiscworld
An eight-day week · the Octeday is real
The Elder Scrolls
Tamrielic calendar · Fourth Era (anchored)
Forgotten Realms
The Calendar of Harptos, from Dungeons & Dragons (anchored)
Roshar — Stormlight
20-hour day, 50-minute hours, 500-day year (anchored)
Stardew Valley
28-day seasons, four to a 112-day year — ~3× ours (anchored)
Westeros
Years After Aegon's Conquest (anchored)
Wheel of Time
Farede Calendar · ten-day weeks, thirteen months (anchored)
The Witcher
Eight feasts around the year, named in Elder Speech
Each date is read at noon of the chosen day, so every calendar lands on a stable date whatever your time zone. For the moment right now — ticking, with each calendar’s own clock — see the live dashboard.