DateTimeMate

DateTimeMate is a tool designed for performing a variety of calculations and conversions involving dates, times, durations, and time zones. It offers features for computing the difference between two date/time values, adding or subtracting durations, and converting results into different units such as years, days, hours, or seconds. 25 days) and does not treat months as a unit, which is explicitly noted in its calculations. Users can specify the output format using strftime specifiers, allowing for custom formatting of dates and times.

The platform supports operations like calculating absolute differences, converting durations, and formatting outputs with a range of date and time components, including full and abbreviated weekday and month names, hours, minutes, seconds, and various representations of weeks and years. Duration notation distinguishes between dates (using uppercase letters like Y, M, W, D) and times (using lowercase letters like h, m, s, ms, us, ns). Negative durations are not allowed as input for some operations, and there are options for brief output and controlling decimal places in converted results.

DateTimeMate also provides timezone conversion capabilities, accepting a wide range of time zones by name, abbreviation, or UTC offset in seconds. It can handle dates before 1970 and allows users to specify both source and target time zones, with support for IANA zone names and common abbreviations. The tool includes example data and clear/reset functions to facilitate repeated or exploratory calculations, and it imposes certain limits on repeated calculations and duration operations (such as capping 'until' operations at two years from the current date).