# Megasecond

A megasecond is one million seconds. This page lists times between 106 seconds and 109 seconds, which is about 11.6 days and 0.0317 years.

One megasecond contains 1000 kiloseconds. There are 1000 megaseconds in one gigasecond.

Ten megaseconds is equal to 115.74 days. 100 megaseconds is equal to 3.2 years.

## Less than a year

• 1.21×106 seconds = 14 days – a fortnight
• 1.38×106 seconds = 15.9735 days – half life of vanadium-48
• 1.54×106 seconds = 17.81 days – half life of californium-253
• 2.36×106 seconds = 27.3217 days – sidereal month
• 2.39×106 seconds = 27.7025 days – half life of chromium-51
• 2.42×106 seconds = 28 days – length of February in non-leap years
• 2.51×106 seconds = 29 days – length of February in a leap year
• 2.59×106 seconds = 30 days – length of the months April, June, September, and November
• 2.68×106 seconds = 31 days – length of the months January, March, May, July, August, October, and December
• 4.45×106 seconds = 51.5 days – half life of mendelevium-258
• 5.23×106 seconds = 60.5 days – half life of californium-254
• 6.68×106 seconds = 77.27 days – half life of cobalt-56
• 7.24×106 seconds = 83.79 days – half life of scandium-46
• 7.54×106 seconds = 87.32 days – half life of sulfur-35
• 7.60×106 seconds = 87 days 23.3 hours – one orbit of Mercury around the Sun
• 8.04×106 seconds = 93.1 days – half life of thulium-168
• 8.68×106 seconds = 100.5 days – half life of fermium-257
• 128.6 days - half life of thulium-170
• 138 days - half life of polonium- 210
• 224.701 days - one orbit of Venus around the sun
• 271.79 days - half life of cobalt-57
• 280 days - normal length of a human pregnancy; about 24 million seconds
• 330 days - half life of vanadium-49
• 333.5 days - half life of californium-248
• ${\displaystyle \pi \cdot 10^{7}s}$ - The value of pi times 107 seconds is sometimes given as an approximate year value; it works out to 363.61026 days.