Weeks to Katuns (wk to katun)
1 week equals 0.0009722222222 katuns (rounded).
How to convert weeks to katuns
To convert weeks to katuns, multiply the number of weeks by 0.0009722222222. The factor is rounded to 10 significant digits. To go the other way, multiply katuns by 1,028.571429 (rounded).
katuns = weeks × 0.0009722222222
Example: 10 weeks = 0.009722222222 katuns.
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
Week (wk)
Seven days. The seven-day week comes from the ancient Near East and is nearly universal in the modern calendar.
Nothing in the sky produces a seven-day cycle, which makes the week a human invention with a contested pedigree. Babylonians marked the 7th, 14th, 21st and 28th of the lunar month as special, but that was not a continuous cycle. A continuous seven-day cycle tied to the Sabbath is attested in Judaism by the 6th century BC at the latest, and scholars disagree on whether it was borrowed from Babylon or developed independently. The Romans later used a week named for the Sun, the Moon and the five visible planets, and in AD 321 Emperor Constantine decreed it across the empire.
A week is seven days, or 604,800 seconds, and it divides evenly into neither months nor years, which is why calendars shift against it. The ISO 8601 standard starts each week on Monday and assigns week 1 to the week containing the year's first Thursday, so some years have a week 53. Other societies used different lengths: Rome had an eight-day market cycle, and revolutionary France used a ten-day week from 1793 to 1802. The English word comes from Old English wice, meaning a turn or succession.
1 week = 604,800 seconds (exactly).
Sources: Wikipedia: Week; Wikipedia: ISO week date
Katun (katun)
20 tuns or 7,200 days (about 19.7 years).
Twenty tuns, or 7,200 days, add up to a katun, which Wikipedia converts to 19.713 tropical years. That is why the unit is described as roughly twenty years, although it falls about three and a half months short of that.
Katuns carried real social weight. Rulers who lived to see four or five of them could take the title of a 4-katun or 5-katun ruler, a kind of age honorific. The end of a katun was marked by ceremonies, and at Tikal large twin pyramid complexes were built to host them. Each katun was also thought to carry its own set of prophecies and associations.
After the Long Count fell out of use in the Postclassic period, the Maya still tracked katuns by the Calendar Round date on which each began, a system known as the Short Count. In the Long Count the katun is the second digit from the left of a typical date, running 0 to 19 before it rolls into the next baktun. The figure of 622,080,000 seconds used here follows from the 7,200 day count.
1 katun = 622,080,000 seconds (exactly).
Sources: Wikipedia: Kʼatun; Wikipedia: Maya calendar; Steve Morse: Mayan Calendar Rules
Related conversions
- Katuns to weeks (reverse)
- Weeks to seconds
- Weeks to minutes
- Weeks to hours
- Weeks to days
- Weeks to months
- Weeks to years
- Weeks to milliseconds
- Weeks to microseconds
- Weeks to nanoseconds
- Weeks to decades
- Weeks to centuries
- Weeks to millennia
- Seconds to katuns
- Minutes to katuns
- Hours to katuns
- Days to katuns
- Months to katuns
- Years to katuns
See all time units.