Days to Moments (d to moment)
1 day equals 960 moments exactly.
How to convert days to moments
To convert days to moments, multiply the number of days by 960. This factor is exact. To go the other way, multiply moments by 0.001041666667 (rounded).
moments = days × 960
Example: 10 days = 9,600 moments.
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.
Approximate value. Standards for the moment varied by place and period, so this converter uses the most commonly cited value. Treat results as estimates, not exact figures.
About these units
Day (d)
24 hours or 86,400 seconds. The mean solar day; the actual rotation of the Earth is about 4 minutes shorter (see sidereal day).
Old English dæg is the root of our day, with close cousins in German Tag, Dutch dag and Icelandic dagur, all descending from Proto-Germanic dagaz. It is the oldest unit here, because the cycle of light and dark needs no instrument. Yet the day we count is a constructed average: the actual interval from one noon to the next varies through the year by up to about 7.9 seconds, because Earth's orbit is elliptical and its axis is tilted.
Astronomers smooth this out with a fictitious mean Sun, giving the mean solar day, and the day in the SI sense is fixed at exactly 86,400 seconds. Reality has drifted slightly: the mean solar day has recently averaged about 86,400.002 seconds, and tidal drag from the Moon is lengthening it by about 2 milliseconds per century. That is why 27 leap seconds were added to UTC between 1972 and 2022. One rotation measured against the distant stars is shorter, about 23 hours 56 minutes 4.09 seconds, and a year contains one more of these sidereal days than solar days.
1 day = 86,400 seconds (exactly).
Sources: Wikipedia: Day; BIPM: SI Brochure, 9th edition
Moment (moment)
About ninety seconds, one fortieth of a solar hour. A medieval unit of time described by the English monk Bede.
Medieval computists, the scholars who worked out the calendar and the date of Easter, used the moment as a small slice of the hour. The Venerable Bede described it in the 8th century. It was one fortieth of a solar hour, measured by the motion of a sundial shadow, and since the solar hour varied with the season, the moment was not fixed.
On average a moment equalled about 90 seconds, which is the figure used here. Bede's scheme also had the punctum at four per hour, the minutum at ten and the pars at fifteen, so a day held 960 moments. Bartholomeus Anglicus and Roger Bacon later wrote about the system, and Bacon subdivided the moment into 12 ounces of 47 atoms each. The modern phrase a moment is much looser, and the ostent that Bacon mentioned is seen as a forerunner of the modern minute.
1 moment = 90 seconds (approximately).
Sources: Wikipedia: Moment (time)
Related conversions
- Moments to days (reverse)
- Days to seconds
- Days to minutes
- Days to hours
- Days to weeks
- Days to months
- Days to years
- Days to milliseconds
- Days to microseconds
- Days to nanoseconds
- Days to decades
- Days to centuries
- Days to millennia
- Seconds to moments
- Minutes to moments
- Hours to moments
- Weeks to moments
- Months to moments
- Years to moments
See all time units.