Julian

Julian-Gregorian Date Calculator makes more than simple date conversion among Gregorian and Julian Calendars. This tool is also used for adding and subtracting a number of days, weeks, months and years to or from a given date.

Convert a specified Julian Date Vector to Greenwich Mean Sidereal Time (GMST). The expected input matrix may contain multiple dimensions. The output matrix will be in the same size as the input matrix. Warning: Use caution when using GMST as a substitute for Greenwich Apparent Sidereal Time...

This utility can convert a gregorian date into julian day format/Modified Julian Day format and vice versa. The Julian Day Format counts the day since the 24th november -4713bc. The julian day format is often used in the astronomical section to calculate for example rises.


Platforms: Windows

A simple command to convert calendar dates to julian dates. Quite useful intiming situations where you need elapsed time between dates.Also useful for astronomy applications.


Platforms: Windows, Mac, Linux

Convert a specified Julian Date Vector to Greenwich Apparent Sidereal Time (GAST). The expected input matrix may contain multiple dimensions. The output matrix will be in the same size as the input matrix. Warning: Use caution when using GAST as a substitute for Greenwich Mean Sidereal Time...


Platforms: Matlab

TrayDay - date, calendar, week number and counter utility for the Windows tray, or Windows XP Notification area. TrayDay places an icon showing the date (day of the month) in the system tray. The icon resembles a page of a "tear-off" calendar. You can therefore see the date at a glance - often...


Platforms: Windows, Other

DateTime::Format::Epoch::TJD is a Perl module that can convert DateTimes to/from Truncated Julian Days. SYNOPSIS use DateTime::Format::Epoch::TJD; my $dt = DateTime::Format::Epoch::TJD->parse_datetime( 13244.5 ); # 2004-08-27T00:00:00 DateTime::Format::Epoch::TJD->format_datetime($dt);...


Platforms: *nix

DateTime::Format::Epoch::RJD is a Perl module that can convert DateTimes to/from Reduced Julian Days. SYNOPSIS use DateTime::Format::Epoch::RJD; my $dt = DateTime::Format::Epoch::RJD->parse_datetime( 53244.5 ); # 2004-08-27T00:00:00 DateTime::Format::Epoch::RJD->format_datetime($dt); #...


Platforms: *nix

DateTime::Format::Epoch::JD is Perl module Convert DateTimes to/from Julian Days. SYNOPSIS use DateTime::Format::Epoch::JD; my $dt = DateTime::Format::Epoch::JD->parse_datetime( 2453244.5 ); # 2004-08-27T00:00:00 DateTime::Format::Epoch::JD->format_datetime($dt); # 2453244.5 my...


Platforms: *nix

DateTime::Format::Epoch::MJD is a Perl module that can convert DateTimes to/from Modified Julian Days. SYNOPSIS use DateTime::Format::Epoch::MJD; my $dt = DateTime::Format::Epoch::MJD->parse_datetime( 53244 ); # 2004-08-27T00:00:00 DateTime::Format::Epoch::MJD->format_datetime($dt); #...


Platforms: *nix

Calendar formats include Gregorian, Thai, Julian, Persian, Islamic, Hebrew, Ethiopian, Coptic, Mayan and Taiwan.An AIR application is also included.


Platforms: JavaScript

This is an interacive GUI, which converts the julian foramt date into gregorian format date and gregorian format date into julian format dat.


Platforms: Matlab

A very simple module to help in writing down a date in Maya notation without having to know how to convert a Julian date to a Maya date.For detailed information: * Maya numerals (Wikipedia) * Maya calendar (Wikipedia) * World Calendars (In French, I'm afraid...)The module is capable of rendering...


Platforms: PHP

wxEuphoria is an implementation of wxWidgets (by Julian Smart, et. al.) for the Euphoria Programming Language. The wxWidgets library is compiled into a DLL or SO, and is linked to by Euphoria code, allowing cross platform development for Euphoria.


Platforms: *nix

Easy Date Converter is a program to perform arithmetical operations with Gregorian, Julian and Annus Novus dates and Julian day numbers. (It is a trilingual English/German/Spanish program.) Suppose a meeting is scheduled for exactly ten weeks (70 days) from Christmas Day 2003. What date will...


Platforms: Windows

A program to convert between dates in various Chinese calendars and dates in the Gregorian and Julian calendars, and to find lunar new year's day and leap months for any year.Supports 60-year and 60-day cycles, includes Chinese names, and allows searching for dates and times of full moons,...


Platforms: Windows

A program to search for eclipses (lunar, solar, total, annual and umbral), to calculate the phase of the Moon at any given date and time and to convert between dates in the Gregorian and Julian calendars and dates in various lunar calendars (Goddess, Meyer-Palmen and Liberalia Triday).


Platforms: Windows

InterCal is a date conversion program and perpetual calendar. It is not a personal appointment calendar.The program displays calendars, one month at a time, for any month of any year in any of nine implemented calendar systems. For each day, the corresponding date in any other system can be...


Platforms: Mac

Easy Date Converter is a program to perform arithmetical operations with dates in various solar calendars, including the Gregorian and the ISO 8601 Week Calendar. It is a bilingual English/German program. Suppose you run an advertisement which expires 45 days from today. What date will that be?...


Platforms: Windows

As I could find no built-in function nor reliable contribution to achieve that, I had no choice but to write my own, leveraging the GregorianCalendar Java class.Usage is quite simple: targetDST = TimezoneConvert( dn, fromTimezone, toTimezone )The datenum dn corresponds to the datetime you want to...


Platforms: Matlab