A. Time Conversion
Time is a measure of the duration of events and the intervals between them. The basic unit of time is the second, with smaller units including the Millisecond, Microsecond, Nanosecond, Picosecond, Femtosecond, and Attosecond. Larger units of time include the Minute, Hour, Day, Week, Month, Year, Decade, Century, and Millennium. These units are used universally across various fields such as science, engineering, and everyday life.
B. How to Use Time Converter
You can use the keyboard to input numbers and arithmetic operators:
0 1 2 3 4 5 6 7 8 9 . keys can be used to input numbers.
+ - keys can be used to input arithmetic operators for advanced conversions.
Use this time converter to convert between different units of time.
C. Metric System (SI Units) - Time Conversion Table
| Unit | Conversion | Description |
|---|---|---|
| Second | Base unit of time | The standard unit of time. |
| Millisecond | 0.001 seconds | One thousandth of a second. |
| Minute | 60 seconds | Time it takes for Earth's rotation to advance by a minute. |
| Hour | 60 minutes | Time it takes for Earth to complete one rotation (relative to the Sun). |
| Day | 24 hours | Time it takes for Earth to complete one full rotation on its axis. |
| Week | 7 days | A typical period for one full cycle of human work/rest time. |
| Month | 30.44 days (approx.) | The average length of a lunar cycle. |
| Year | 12 months | Time it takes Earth to complete one orbit around the Sun. |
| Decade | 10 years | A period of 10 Earth orbits around the Sun. |
| Century | 100 years | A period of 100 Earth orbits around the Sun. |
| Millennium | 1,000 years | A period of 1,000 Earth orbits around the Sun. |
| Microsecond | 1e-6 seconds | A time interval shorter than a blink of an eye. |
| Nanosecond | 1e-9 seconds | A time interval smaller than the speed of light can travel in a nanosecond. |
| Picosecond | 1e-12 seconds | A time interval that could pass unnoticed even by the fastest human reactions. |
| Femtosecond | 1e-15 seconds | A time scale where molecular reactions occur. |
| Attosecond | 1e-18 seconds | A time scale for phenomena occurring within atoms or electrons. |
D. Other Unit System - Time Conversion Table
| Unit | Conversion | Description |
|---|---|---|
| Shake | 10 nanoseconds | A unit of time used in nuclear physics, equal to 10 nanoseconds. |
| Month Synodic | 29.53059 days | The average period of the Moon's orbit with respect to the line joining the Sun and Earth. |
| Year Julian | 365.25 days | A year in the Julian calendar, consisting of 365.25 days. |
| Year Leap | 366 days | A leap year in the Gregorian calendar, consisting of 366 days. |
| Year Tropical | 365.2422 days | The time it takes the Earth to complete one orbit around the Sun, relative to the vernal equinox. |
| Year Sidereal | 365.25636 days | The time it takes the Earth to complete one orbit around the Sun, relative to fixed stars. |
| Day Sidereal | 23 hours, 56 minutes, 4.1 seconds | The time it takes for the Earth to rotate once relative to the fixed stars. |
| Hour Sidereal | 3,590.17 seconds | 1/24th of a sidereal day. |
| Minute Sidereal | 59.836 seconds | 1/60th of a sidereal hour. |
| Second Sidereal | 0.99726957 seconds | 1/60th of a sidereal minute. |
| Fortnight | 2 weeks | A period of two weeks. |
| Septennial | 7 years | A period of seven years. |
| Octennial | 8 years | A period of eight years. |
| Novennial | 9 years | A period of nine years. |
| Quindecennial | 15 years | A period of fifteen years. |
| Quinquennial | 5 years | A period of five years. |
| Planck Time | 5.39e-44 seconds | The time it takes for light to travel one Planck length. |
| Lustrum | 5 years | A period of five years. |
| Olympiad | 4 years | A period of four years, associated with the Olympic Games. |
| Tritade | 3 years | A period of three years. |
| Quadrennium | 4 years | A period of four years. |
| Lunar Month | 29.53059 days | The average time between successive new moons. |
| Lunar Year | 12 Lunar Months | The time it takes for the Moon to complete 12 lunar months. |
| Draconic Year | 346.6 days | The time it takes for the Moon to return to the same node of its orbit. |
| Gaussian Year | 365.2422 days | The time it takes for a planet to complete one orbit around the Sun, assuming a circular orbit. |
| Heliacal Year | 365.2422 days | The time it takes for the Sun to return to the same position relative to the fixed stars. |
| Saros | 18 years, 11 days, and 8 hours | A period of approximately 18 years, 11 days, and 8 hours, used to predict eclipses. |
| Exeligmos | 3 Saros cycles | A period of three Saros cycles, used to predict eclipses. |
| Octaeteris | ±8 years | A period of ±8 years or 99 month synodic, used in ancient Greek calendars. |
| Enneadecaeteris (Metonic) | ±19 years | A period of ±19 years or 235 month synodic, used to predict the phases of the Moon in ancient Greek calendars. |
| Callippic Period | ±76 years | A period of ±76 years or 940 month synodic, used in ancient Greek calendars. |
| Hipparchic Cycle | ±345 years | A period of ±345 years or 4267 month synodic, used in ancient Greek calendars. |
| Sothic Period | 1460 years | A period of 1460 years, used in ancient Egyptian calendars. |
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