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To help compare orders of magnitude of different times this page lists times between 116 days and 1157 days or 3.2 years (10⁷ seconds and 10⁸ seconds).

• Shorter times
• 10 megaseconds = 115.74 days
• 224.701 days — one orbit of Venus
• 260 days — length of the Tzolk'in, or Sacred Round, in the Mayan calendar
• 280 days — average length of a human pregnancy; ~24 million seconds
• 353, 354 or 355 days — the lengths of regular years in some lunisolar calendars
• 354.37 days — 12 lunar months; the average length of a year in lunar calendars
• — The value of pi times 10⁷ seconds is sometimes given as an approximate year value; it works out to 363.61026 days.
• 360 days — one tun in the Mesoamerican Long Count calendar
• 365 days — a regular year in many solar calendars; ~31.53 million seconds. Also the fixed length of the year in the Ancient Egyptian calendar and the length of a Haab in the Mayan calendar.
• 365.24219 days — a mean tropical year near the year 2000
• 365.2424 days — a vernal equinox year.
• 365.2425 days — the average length of a year in the Gregorian calendar
• 365.25 days — the average length of a year in the Julian calendar
• 365.2564 days — a sidereal year
• 366 days — a leap year in many solar calendars; 31.62 million seconds
• 383.9 days — 13 lunar months; leap year in some lunisolar calendars
• 383, 384 or 385 days — the lengths of leap years in some lunisolar calendars
• 686.971 days — one orbit of Mars
• 100 megaseconds = 3.2 years

[edit] Half lives

• 128.6 days — half life of thulium-170
• 138 days — half life of polonium- 210
• 271.79 days — half life of cobalt-57
• 330 days — half life of vanadium-49
• 333.5 days — half life of californium-248
• 373.59 days — half-life of ruthenium-106
• 396.1 days — half-life of neptunium-235
• 462.6 days — half-life of cadmium-109
• 1.92 years — half life of thulium-171

• Longer times

[edit] See also

• times of other orders of magnitude.

v • d • e Orders of magnitude (time), by powers of seconds Negative powers 10−44 s | ... | 10−24 s ... 10−19 s | 10−18 s ... 10−16 s | 10−15 s ... 10−13 s | 10−12 s ... 10−10 s | 10−9 s ... 10−7 s | 10−6 s ... 10−4 s | 10−3 s | 10−2 s | 10−1 s Positive powers 100 s | 10 s | 102 s | 103 s | 104 s | 105 s | 106 s | 107 s | 108 s | 109 s | 1010 s | 1011 s | 1012 s | 1013 s |1014 s | 1015 s | 1016 s | 1017 s | 1 E18 s and longer