1 days is equal to
= 1440 minutes

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Time

A unit of time is any particular time interval, used as a standard way of measuring or expressing duration. The base unit of time in the International System of Units (SI), and by extension most of the Western world, is the second, defined as about 9 billion oscillations of the caesium atom. The exact modern definition, from the National Institute of Standards and Technology is: The duration of 9192631770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium 133 atom.

Time UnitsSymbolDefinitionRelation to SI units
atomic unit of timeau≡ a0/(α·c)≈ 2.418884254×10−17 s
Callippic cycle ≡ 441 mo (hollow) + 499 mo (full) = 76 a of 365.25 d= 2.396736 Gs or 2.3983776 Gs
centuryc≡ 100 years (100 a)= 3.1556952 Gs
dayd= 24 h = 1440 min= 86.4 ks
day (sidereal)d≡ Time needed for the Earth to rotate once around its axis.≈ 86.1641 ks
decadedec≡ 10 years (10 a)= 315.569520 Ms
fortnightfn≡ 2 wk= 1.2096 Ms
helek ≡  1⁄1080 h= 3.3 s
Hipparchic cycle ≡ 4 Callippic cycles - 1 d= 9.593424 Gs
hourh≡ 60 min= 3.6 ks
jiffyj≡  1⁄60 s= 16.6 ms
jiffy (alternative)ja≡  1⁄100 s= 10 ms
ke (quarter of an hour) ≡  1⁄4 h =  1⁄96 d = 15 min= 900 s
ke (traditional) ≡  1⁄100 d = 14.4 min= 864 s
lustre; lustrum ≡ 5 a of 365 d= 157.68 Ms
Metonic cycle; enneadecaeteris ≡ 110 mo (hollow) + 125 mo (full) = 6940 d ≈ 19 a= 599.616 Ms
millennium ≡ 1000 years (1000 a)= 31.556952 Gs
millidaymd≡  1⁄1000 d= 86.4 s
minutemin≡ 60 s, due to leap seconds sometimes 59 s or 61 s,= 60 s
moment ≡ 90 s= 90 s
month (full)mo≡ 30 d= 2.592×106 s
month (Greg. av.)mo= 30.436875 d≈ 2.6297 Ms
month (hollow)mo≡ 29 d= 2.5056 Ms
month (synodic)moCycle time of moon phases ≈ 29.530589 d (average)≈ 2.551 Ms
octaeteris = 48 mo (full) + 48 mo (hollow) + 3 mo (full) = 8 a of 365.25 d = 2922 d= 252.4608 Ms
Planck time ≡ ( Gℏ⁄c5) 1⁄2≈ 1.351211868×10−43 s
secondstime of 9192631770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom at 0 K (but other seconds are sometimes used in astronomy). Also that time it takes for light to travel a distance of 299792458 metres.(SI base unit)
shake ≡ 10−8 s= 10 ns
sigma ≡ 10−6 s= 1 μs
Sothic cycle ≡ 1461 a of 365 d= 460.74096 Ts
svedbergS≡ 10−13 s= 100 fs
weekwk≡ 7 d = 168 h = 10080 min= 604.8 ks
year (common)a, y, or yr365 d= 31.536 Ms
year (Gregorian)a, y, or yr= 365.2425 d average, calculated from common years (365 d) plus leap years (366 d) on most years divisible by 4. See leap year for details.= 31.556952 Ms
year (Julian)a, y, or yr= 365.25 d average, calculated from common years (365 d) plus one leap year (366 d) every four years= 31.5576 Ms
year (leap)a, y, or yr366 d= 31.6224 Ms
year (mean tropical)a, y, or yrconceptually, the length of time it takes for the Sun to return to the same position in the cycle of seasons, approximately 365.24219 d, each day being 86400 SI seconds≈ 31.556925 Ms
year (sidereal)a, y, or yr≡ time taken for Sun to return to the same position with respect to the stars of the celestial sphere, approximately 365.256363 d≈ 31.5581497632 Ms