Convert dates between ancient Mayan Long Count calendar and modern Gregorian calendar. Free online calculator using GMT correlation constant for accurate archaeological dating and historical research.
Correlation Constant (GMT): 584,283
This is the Julian Day Number corresponding to the Mayan date 0.0.0.0.0 (August 11, 3114 BCE in the proleptic Gregorian calendar)
Format: MM/DD/YYYY (e.g., 12/21/2012)
Format: baktun.katun.tun.uinal.kin (e.g., 13.0.0.0.0)
144,000 days (approximately 394 years). The largest unit in the Long Count.
7,200 days (approximately 20 years). Equal to 20 tuns.
360 days (approximately 1 year). Equal to 18 uinals.
20 days (approximately 1 month). Equal to 20 kins.
1 day. The smallest unit in the Long Count calendar.
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