Winals to Months (winal to mo)
1 winal equals 0.6570976817 months (rounded).
How to convert winals to months
To convert winals to months, multiply the number of winals by 0.6570976817. The factor is rounded to 10 significant digits. To go the other way, multiply months by 1.52184375.
months = winals × 0.6570976817
Example: 10 winals = 6.570976817 months.
Months and years are not constant. This site uses the average Gregorian year of 365.2425 days, so one 'year' converts to 365.2425 days, not 365; use 'common year' for exactly 365 days.
About these units
Winal (winal)
20 days, the Maya 'month' of the Long Count.
A winal, also spelled uinal, is a block of 20 days and the second-smallest step in the Maya Long Count. It is often likened to a month, though it has nothing to do with the moon. Twenty kʼin fill one winal, which matches the 20 named days that cycle through the Maya sacred calendar and the 20-day months of the civil year.
On monuments the winal is the fourth number in a Long Count date, ahead of the kin. Its count runs from 0 to 17 and not to 19, because 18 winals make one tun of 360 days. This is the point where the otherwise base-20 system departs from pure powers of twenty. One carved example is a full-figure winal sign on Stela D at Copan.
At 20 days, a winal equals 1,728,000 seconds and is a little under three weeks. No modern calendar unit corresponds to it closely, and it is an exact count of days with no ambiguity about its size.
1 winal = 1,728,000 seconds (exactly).
Sources: Wikipedia: Winal; Wikipedia: Maya calendar; Steve Morse: Mayan Calendar Rules
Month (mo)
One twelfth of an average Gregorian year: 30.436875 days. Calendar months actually range from 28 to 31 days.
Month and Moon are cognates, and the unit began as the Moon's cycle of phases, about 29.53 days from one new moon to the next. The trouble is that 12 of these fall short of a solar year, so calendars have had to choose. The Islamic calendar stays purely lunar, so its year is about 11 days shorter than the solar year, while the Hebrew calendar is lunisolar, using a 19-year cycle with an extra month. Even the start of a lunar month is still debated between observing the crescent and calculating it.
Gregorian months are a compromise that drifted far from the Moon. Their lengths run from 28 to 31 days, and this site uses their mean of 30.436875 days, one twelfth of the average year. The names also keep Roman history: September to December preserve the Latin numerals for seven to ten, since they were originally the seventh to tenth months, and Quintilis and Sextilis were renamed for Julius Caesar and Augustus. When a contract says month, check whether it means a calendar month or thirty days.
1 month = 2,629,746 seconds (exactly).
Sources: Wikipedia: Month; Wikipedia: Lunar calendar
Related conversions
- Months to winals (reverse)
- Winals to seconds
- Winals to minutes
- Winals to hours
- Winals to days
- Winals to weeks
- Winals to years
- Seconds to months
- Minutes to months
- Hours to months
- Days to months
- Weeks to months
- Years to months
- Milliseconds to months
- Microseconds to months
- Nanoseconds to months
- Decades to months
- Centuries to months
- Millennia to months
See all time units.