Weeks to Prahar (wk to prahar)
1 week equals 56 prahar exactly.
How to convert weeks to prahar
To convert weeks to prahar, multiply the number of weeks by 56. This factor is exact. To go the other way, multiply prahar by 0.01785714286 (rounded).
prahar = weeks × 56
Example: 10 weeks = 560 prahar.
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
Prahar (prahar)
Three hours: an eighth of a day. Traditional South Asian watches of the day and night.
Hindi speakers still say dopahar for afternoon, literally two prahars, and Bengali has the related dui-pohor. The Sanskrit prahara divides the day and night into eight watches, four starting at sunrise and four at sunset. In the standard model each lasts about three hours, though traditionally the length followed the real sunrise and sunset, so day watches were longer in summer and night watches longer in winter.
A nineteenth-century note cited by Wikipedia puts northern India's day prahars at roughly 3.5 hours near the summer solstice and 2.5 hours in winter. The figure used here is the fixed three-hour watch. Four prahars correspond to fifteen muhurtas, but the two systems agree only at sunrise and sunset, since a muhurta is a fixed 48 minutes.
Prahars matter in Indian classical music, where each raga is prescribed for a particular watch. The link between raga and time is already in Narada's Sangita Makaranda, dated between the 7th and 11th centuries, and Wikipedia argues the idea is older than Bhatkhande, who died in 1936.
1 prahar = 10,800 seconds (exactly).
Sources: Wikipedia: Prahara; Wikipedia: Hindu units of time
Related conversions
- Prahar 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 prahar
- Minutes to prahar
- Hours to prahar
- Days to prahar
- Months to prahar
- Years to prahar
See all time units.