Prahar to Years (prahar to yr)
1 prahar equals 0.0003422383759 years (rounded).
How to convert prahar to years
To convert prahar to years, multiply the number of prahar by 0.0003422383759. The factor is rounded to 10 significant digits. To go the other way, multiply years by 2,921.94.
years = prahar × 0.0003422383759
Example: 10 prahar = 0.003422383759 years.
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
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
Year (yr)
The average Gregorian calendar year of 365.2425 days (31,556,952 seconds). A common year has 365 days and a leap year 366.
A year is the Earth's trip around the Sun, but there are several versions. The tropical year, which tracks the seasons, is about 365.2422 days. The sidereal year, measured against the stars, is about 365.2564 days, roughly 20 minutes longer, because the Earth's axis precesses. Calendars must squeeze these into whole days, which is the origin of leap years. English year descends from Old English gear, while Latin annus, the source of annual, comes from a different root.
The Gregorian calendar, introduced by Pope Gregory XIII's bull of 24 February 1582, fixed the problem of Julian drift that had moved the March equinox away from 21 March and upset the date of Easter. Ten days were skipped, so Thursday 4 October was followed by Friday 15 October. Its rule of skipping leap days in century years not divisible by 400 gives a mean year of 365.2425 days, the value this site uses for the year. Britain and its empire switched in 1752 and Russia in 1918. Scientists write the year as a, with the Julian year fixed at 31,557,600 seconds.
1 year = 31,556,952 seconds (exactly).
Sources: Wikipedia: Year; Wikipedia: Gregorian calendar
Related conversions
- Years to prahar (reverse)
- Prahar to seconds
- Prahar to minutes
- Prahar to hours
- Prahar to days
- Prahar to weeks
- Prahar to months
- Seconds to years
- Minutes to years
- Hours to years
- Days to years
- Weeks to years
- Months to years
- Milliseconds to years
- Microseconds to years
- Nanoseconds to years
- Decades to years
- Centuries to years
- Millennia to years
See all time units.