Julian 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...

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...

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 ECI (CIS, Epoch J2000.0) Coordinates to WGS 84 (CTS, ECEF) Coordinates. This function has been vectorized for speed.Example Function Call:>> [r_ECEF v_ECEF] = ECItoECEF(JD,r_ECI,v_ECI);Where:JD is the Julian Date vector [1 x N] (units are in days)r_ECI is the position vector [3 x N] (any...


Platforms: Matlab

WJO Time is a simple application to tell the time using different time standards. Features - Local Time; Co-ordinated Universal Time; Julian Date - to nearest second; Apparent Sidereal Time; Mean Sidereal Time. The display can be configured to show any combination of times and when minimised will...


Platforms: Windows

Time::Piece is a Perl module that contains Object Oriented time objects. SYNOPSIS use Time::Piece; my $t = localtime; print "Time is $tn"; print "Year is ", $t->year, "n"; This module replaces the standard localtime and gmtime functions with implementations that return objects. It does...


Platforms: *nix

AstroTimes widget displays the current Universal Time, the Local Sidereal Time, the current Julian Date and the current Modified Julian Date. Since the Local Sidereal Time depends on the longitude, a list of some important astronomical observatories is provided on the back.


Platforms: Mac

PTBSync is a tool to synchronize your PC time with an an atomic clock via the internet. It offers 65 Time servers (NTP) worldwide to choose from. In addition to time synchronization, PTBSync also includes a complete personal organizer for reminders and repetitive events such as birthdays,...


Platforms: Windows

This toolbox contains a satellite tracker MSatTrack. You can input orbital parameters defined by yourself or existing ones (included). The tracking is done in 3D and the resulting grountracks are then plotted on a 2D map after the simulation is done. Several satellites can be simulated...


Platforms: Matlab

A collection of geodetic functions that solve a variety of problems in geodesy. Supports a wide range of common and user-defined reference ellipsoids. Most functions are vectorized. Functions include:Angle Conversions deg2rad - Degrees to radians dms2deg - Degrees,minutes,seconds to degrees...


Platforms: Matlab

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.


Platforms: Windows, XP, Windows Vista, 7, 7x64

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

Date::ISO8601 - the three ISO 8601 numerical calendars The international standard ISO 8601 "Data elements and interchange formats - Information interchange - Representation of dates and times" defines three distinct calendars by which days can be labelled. It also defines textual formats for the...


Platforms: *nix

Exchangeable Image File (EXIF) data is stored within JPEG images. Almost all digital cameras record and store the cameras settings, scene information, date/time the photo was taken etc within this EXIF data. This information can be really useful when it comes to sorting and viewing your digital...


Platforms: Windows

Date::Hijri is a Perl extension to convert islamic (hijri) and gregorian dates. SYNOPSIS use Date::Hijri; # convert gregorian to hijri date my ($hd, $hm, $hy) = g2h($gd, $gm, $gy); # convert hijri to gregorian date my ($gd, $gm, $gy) = h2g($hd, $hm, $hy); This simple module converts...


Platforms: *nix

Test::Reporter::Date::Format Perl module contains date formating subroutines. SYNOPSIS use Test::Reporter::Date::Format; @lt = localtime(time); print time2str($template, time); print strftime($template, @lt); print time2str($template, time, $zone); print strftime($template, @lt,...


Platforms: *nix

Date-Pcalc is a Perl module and is a direct translation of Steffen Beyers excellent Date::Calc module to use Perl only instead of a combination of Perl and C. This package consists of a Perl module for all kinds of date calculations based on the Gregorian calendar (the one used in all western...


Platforms: *nix

Date::Convert::French_Rev can convert from / to French Revolutionary Calendar. SYNOPSIS use Date::Convert::French_Rev; Converting from Gregorian (or other) to Revolutionary $date=new Date::Convert::Gregorian(1799, 11, 9); convert Date::Convert::French_Rev $date; print $date->date_string,...


Platforms: *nix

Fast Date Picker project is a calendar which is easy to integrate into pages that require the users to select a date like on travel sites. Written in ECMAScript, it responds faster to the users clicks than most of the server-side-based or Java-applet-based date pickers often found on travel...


Platforms: *nix

Date::Roman is a Perl OO extension for handling roman style dates. SYNOPSIS use Date::Roman; $caesar_death = Date::Roman->new(roman => id 3 702); print $caesar_death->ical(),"n"; #prints -520315 This module defines a class for handling Roman dates as defined by Julius Caesar in 45 BC..


Platforms: *nix