Time Calculator (TimeCalc)

With Time Calculator (TimeCalc), you can add/subtract a number of years, months, days, hours, minutes, or seconds to/from a date/time value. You can also find out the difference between two date/time values.

Key Features

• Add / subtract a number of years, months, days, hours, minutes, or seconds to / from a date / time value.
• Find out the difference between two date/time values.
• Support decimal and negative values, and Simplified / Traditional Chinese localisation.

Assumptions

According to the definition of the Gregorian calendar, the following assumptions are made in this application:

• 1 Year = 365.25 days
• 1 Month = 30.436875 days
• 1 Week = 7 days
• 1 Day = 24 hours
• 1 Business Day = A day in between Monday and Friday inclusive, except local public holidays.
• (Future support of customising local public holidays may be added.)
• 1 Hour = 60 Minutes
• 1 Minute = 60 Seconds
• Earliest date supported: 4713/01/02 B.C. (i.e. the next day of the Julian Day)
• Earliest Selectable Date: 1900/01/01 00:00:00
• Latest Selectable Date: 2099/12/31 23:59:59
• Largest Plus / Minus Value: 99999
• A.D. 2012 - 2012 years = 1 B.C., as there is no Year 0 by definition

Notice

Calculation results of this application are for reference purpose only; their accuracy is not guaranteed.