Enter the value that you want to calculate time and date..
| From: | at: | ||
| To: | at: | ||
| Time difference: |
Time and date calculator find the time difference between two dates. Our date duration calculator counts the time duration between two days in minutes, hours, days, & years. You need to determine the start date and end dates to calculate number of days between two dates. Our date difference calculator evaluates the exact duration between dates in minutes, hours, days, & years.
Here we are using US date formatting month/date/year & Time format will be hours: minutes. Our calculator used to find the time and date difference between two non-businesses or businesses date to date.
Few 100 years back clock is not discovered so people use to measure time by Sunlight, Sand Clock & Sundials where used. The sand clock is a device which consists of two glass chambers. One chamber is filled up with sand, this sand will move from one chamber to other chambers in dedicated time. Sundial is a device by these people knows the time by the position of the sun. Sundial has a flat plate with the gnomon (It produce a shadow) attached to it. As the sun moves the gnomon is shows a shadow in a different direction on the sundial plate by these people will know the time.
The user guide of time and date calculator:
Open Time and Date Calculator.
Select the start and end date from the calendar.
Enter the starting and ending time.
Our time between dates calculator provides you the exact days between dates.
| Unit | Definition |
| millennium | 1,000 years |
| century | 100 years |
| decade | 10 years |
| year (average) | 365.242 days or 12 months |
| common year | 365 days or 12 months |
| leap year | 366 days or 12 months |
| quarter | 3 months |
| month | 28-31 days Jan., Mar., May, Jul., Aug. Oct., Dec.—31 days Apr., Jun., Sep., Nov.—30 days. Feb.—28 days for common year and 29 days for leap year |
| week | 7 days |
| day | 24 hours or 1,440 minutes or 86,400 seconds |
| hour | 60 minutes or 3,600 seconds |
| minute | 60 seconds |
| second | base unit |
| millisecond | 10-3 second |
| microsecond | 10-6 second |
| nanosecond | 10-9 second |
| picosecond | 10-12 second |
| To Convert from Unit | Unit Symbol | and Convert to ( s ) | Multiply by ( s / Unit ) |
| nanosecond | ns | second | 0.000000001 |
| millisecond | ms | second | 0.001 |
| second | s | second | 1 |
| second (sidereal) | s | second | 0.99726956 |
| minute | min | second | 60 |
| minute (sidereal) | min | second | 59.83617361 |
| hour | h | second | 3600 |
| hour (sidereal) | h | second | 3590.170417 |
| day | d | second | 86400 |
| day (sidereal) | d | second | 86164.09 |
| week | wk | second | 604800 |
| month | mo | second | 2628000 |
| shake | shake | second | 0.00000001 |
| year | yr | second | 31536000 |
| year (sidereal) | yr | second | 31449892.85 |
| decade | dec | second | 315360000 |
| century | c | second | 3153600000 |
| millennium | millennium | second | 31536000000 |