** For PRO version go here: http://goo.gl/Hz8ML **

Easy to use, multi-functional Date Calculator/Day Calculator/Age Calculator/Timezone Calculator/Unixtime converter and Leap Year Calculator.
Calculate difference between two dates or compute a new date by adding or subtracting days or weeks from a selected start date. It's also a unixtime/timestamp converter. Both conversions are supported, to unix timestamp and from unix timestamp. Handy productivity tool for system administrators.
Calculate:
- day of the week (pick a start date on any tab)
- past leap years, future leap years (via Difference tab)
- prescription renewal date (via Date Add tab)
- project deadline or projected end date (via Date Add tab)
- current/past/future time in another part of the world (via Timezone tab)
- convert a date to unix-time/unix epoch/timestamp (via Unixtime tab)
- convert unix timestamps back to human readable format (via Unixtime tab)
- how many seconds/days/weeks you've been alive (via Difference tab)
- how long until your next birthday (via Difference tab)
- how long until next vacation or holiday (via Difference tab)
- how many leap years in the next century (via Difference tab)

To determine any leap years click on Difference tab.
For starting date pick any date in year prior to the year(s) you want to check.
For ending date pick any date in year following the year(s) you want to check.
The last line in the next screen will tell you which years contain leap days.

A paid version is now also available without any ads. Other benefits include all timezones and more granular functionality. Search for "A Better Date Calculator PRO" on the Android Market ( http://goo.gl/Hz8ML )

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Screenshots: