month (30 days)
1 month (30 days) =
| Permeability coefficient | ||
| Symbol | Unit Name | |
| 2.592×106 | kg-m/N-s | kilogram meter per newton per second |
| 1.78363×1018 | perm-inch (0 °C) | perm-inch (0°C) |
| 1.77621×1018 | perm-inch (23 °C) | perm-inch (23°C) |
| 1.78363×1021 | perm-mil (0 °C) | perm-mil (0°C) |
| 1.77621×1021 | perm-mil (23 °C) | perm-mil (23°C) |
| Time | ||
| Symbol | Unit Name | |
| 1.07157×1023 | a.u. | a.u. of time |
| 3×106 | blink | |
| 30 | d | day |
| 30.0822 | d (sider.) | day (sidereal) |
| 2.14286 | fortnight | |
| 720 | h | hour |
| 2.75756×1029 | Jordan's elementary time | |
| 2.592×1012 | ms | microsecond |
| 2.592×109 | ms | millisecond |
| 4.32×104 | min, mn | minute |
| 1.09803 | month (sidereal) | |
| 0.986301 | month (solar mean) | |
| 1.0159 | month (synodic), lunar month | |
| 2.592×1015 | ns | nanosecond |
| 2.592×106 | s | second |
| 2.592×1014 | shake | |
| 4.28571 | w | week |
| 7.776×1015 | wink | |
| 8.21348×10-2 | aastr. | year (astronomical), Bessel year |
| 8.21918×10-2 | a, y | year (calendar) |
| 8.21341×10-2 | year (sidereal) | |
| 8.21355×10-2 | a, y | year (solar mean) |
| 8.21373×10-2 | atrop. | year (tropical) |
