Olympiads to Seconds (olympiad to s)
1 olympiad equals 126,227,808 seconds exactly.
How to convert olympiads to seconds
To convert olympiads to seconds, multiply the number of olympiads by 126,227,808. This factor is exact. To go the other way, multiply seconds by 7.922184627×10⁻⁹ (rounded).
seconds = olympiads × 126,227,808
Example: 10 olympiads = 1,262,278,080 seconds.
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
Olympiad (olympiad)
Four years, the interval between ancient Olympic Games. The Greeks dated events by the Olympiad.
Greek historians dated events by Olympiads, the four-year cycles that began with each celebration of the Games at Olympia. The traditional first Olympiad starts in the summer of 776 BC, the date given for the victory of Coroebus. Hippias of Elis compiled the first full list of victors, now lost, and Timaeus of Tauromenium used the system consistently in the 3rd century BC.
Some ancient writers called an Olympiad a five-year period, but that came from inclusive counting, and each cycle was in fact four years long. Because the Games took place in midsummer, an Olympiad year ran from one summer to the next and did not match the Roman consular year beginning in January. Early dates were applied backwards and are less reliable. The modern Olympiad is also four years, but it starts on 1 January of years divisible by four, beginning with 1896. Four Gregorian years is about 126.2 million seconds.
1 olympiad = 126,227,808 seconds (exactly).
Sources: Wikipedia: Olympiad
Second (s)
The SI base unit of time, defined by the radiation frequency of the cesium-133 atom: 9,192,631,770 cycles per second.
Our word second is a leftover of Latin. Medieval scholars divided a degree, and later the hour, into 60 parts called pars minuta prima, the first small part, and divided those again into pars minuta secunda, the second small part. NIST traces the roots further back: Babylonian and Greek astronomers split the circle into 360 degrees, and around 150 C.E. Ptolemy split each degree into 60 minutes and each minute into 60 seconds. Clocks that could show seconds appeared only in the later 16th century, and Christiaan Huygens's pendulum clock of 1656 was the first able to keep time accurately to the second.
For most of history the second was a fraction of a day, and in 1956 it was redefined as a fraction of the tropical year, a definition the SI took over in 1960. In 1967 the 13th CGPM switched to atoms: 9,192,631,770 periods of the radiation tied to a hyperfine transition of caesium-133. The 2019 SI revision restated this by fixing the caesium frequency at 9,192,631,770 hertz. NIST reports that commercial caesium clocks stay within about a three-millionth of a second per year, and experimental clocks based on other atoms are roughly ten thousand times more precise.
The second is the reference unit for time on this site.
Sources: NIST: the second and the SI redefinition; BIPM: SI Brochure, 9th edition; Wikipedia: Second
Related conversions
- Seconds to olympiads (reverse)
- Olympiads to minutes
- Olympiads to hours
- Olympiads to days
- Olympiads to weeks
- Olympiads to months
- Olympiads to years
- Minutes to seconds
- Hours to seconds
- Days to seconds
- Weeks to seconds
- Months to seconds
- Years to seconds
- Milliseconds to seconds
- Microseconds to seconds
- Nanoseconds to seconds
- Decades to seconds
- Centuries to seconds
- Millennia to seconds
See all time units.