Calendar Date Conversion Software
- Guide to calendar date conversion software
Use this to find out which program (or pair of programs) will convert dates in a selection of calendars.- Easy Date Converter
Windows software for conversion among dates (in American, European or ISO 8601 format) in the following calendars:This program also gives you the day of the week for a date and does date arithmetic: adding or subtracting a number of days to or from a date, and getting the number of days between two dates (with inclusion or exclusion of weekend days). This is a multi-lingual program: English/German/Spanish.
- Common Era (Gregorian) Calendar
- Julian Calendar
- Hermetic Leap Week Calendar
- yyyyddd (day-in-year, ordinal) dates
- Julian day numbers
- Easy Date Converter Advanced Version
This version can perform batch processing of date operations and has a built-in programming language with control structures, variables and functions.
Lunar Calendars and Eclipse Finder
Windows software for conversion among dates in following calendars:This program also finds the next or previous:
- Common Era (Gregorian) Calendar
- Julian Calendar
- Goddess Lunar Calendar
- Meyer-Palmen Solilunar Calendar
- Liberalia Triday Calendar
- Julian day numbers
- Full moon
- Dark moon
- Half moon (1st quarter)
- Half moon (last quarter)
- Quarter
- Lunar or solar eclipse
- Lunar eclipse
- Total lunar eclipse
- Total or umbral lunar eclipse
- Solar eclipse
- Total solar eclipse
- Annular solar eclipse
- Chinese Calendrics
Software for converting between dates in the Chinese solar and lunar calendars and dates in the Common Era and Julian Calendars.
This software also provides information such as the dates of Chinese New Year's Day for any year, and the presence of leap months in any selected 40-year period. It also allows you to find the next or previous full moon, dark moon, solstice or equinox, and allows addition of a certain period (e.g. a lunar month) or a certain number of days to a given date.
- Mayan Calendrics
Console application software for conversion among dates in following calendars:This program allows specification of correlation number, year-bearer system and month base number.
- Common Era (Gregorian) Calendar
- Julian Calendar
- Maya Long Count
- Tzolkin-Haab
- Julian day numbers
- Annus Novus Decimal Calendar Converter
For converting between dates in the Annus Novus Decimal Calendar and dates in the Common Era and other Calendars.
- Printable Calendar
A modest utility to help you keep track of things to do, etc.
- Printable Hermetic Lunar Week Calendar
The same for the Hermetic Lunar Week Calendar.
- Hermetic Lunar Week Calendar Day Count
This gives information about the frequency of days of different kinds.
- The Hermetic Leap Week Calendar in Year-Month-Day Form
Displays the months of the calendar for any year in the range 2007-2040.
- Moonth of Sundays
This finds sequences of four consecutive lunar quarters falling on the same day of the (conventional) week.
- Dates and Times of Equinoxes and Solstices
Online calculation of the dates and times of the vernal and autumnal equinoxes and the dates and times of the summer and winter solstices for any year in the range -100 through 4000.
- Identical Calendar Years
How long do you have to wait before you can re-use that old wall calendar that you like so much?
- Online Chinese/Western Year Converter
For converting between years in the Chinese Calendar and years in the Common Era Calendar. Short explanation given here.
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