Search Results for "julian date"
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Showing 26 open source projects for "julian date"
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julian-day-calendar-1583
Integer algorithms from J. Scaliger in 1583 for calendar date "math"
Josephus Justus Scaliger created the concept of Julian Day Number (named in honor of his father Julius) because he was a historian interested in resolving historical dates based on different calendars. He brought together several calendars including the Gregorian calendar in 1583 and chose a base date of 4713 BC January 1 from which to number all days. He chose that date as one common to the then common calendars he wanted to reconcile. He also devised an algorithm using integer calculations... -
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dateutil
Useful extensions to the standard Python datetime features
The dateutil module provides powerful extensions to the standard date time module, available in Python. dateutil can be installed from PyPI using pip (note that the package name is different from the importable name). -
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Joda-Time
Replacement for the Java date and time classes prior to Java SE 8
.... The Gregorian, Julian, Buddhist, Coptic, Ethiopic and Islamic calendar systems are also included. Supporting classes include time zone, duration, format and parsing. Joda-Time provides a quality replacement for the Java date and time classes. Joda-Time is the de facto standard date and time library for Java prior to Java SE 8. Users are now asked to migrate to java.time (JSR-310). -
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VirtualCelestialGlobe
A java 3d simple virtual celestial globe. Source code available
VirtualCelestialGlobe 1.2.7b World Globe 0.0.7 A simple java 3d virtual celestial and world globe. Rotate the globe, magnify it, select the level of detail to show stars and constellations, and the ecliptic. Source code available to everyone to modify it. Star catalogue from Wikipedia. Available plain text star catalogue. Total stars number now reaches 1038. Using Phong shading. No Open GL. Package contains also Astronomical tools: Planetarium Star Visibility Julian date Angle... -
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SidClock
*nix Sidereal Clock
*nix Sidereal Clock Application -
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libhdate, hcal and hdate
C library for Hebrew dates / times of day / solar times
libhdate is a C library for Hebrew calendar information, including dates, holidays, and times of day. The package includes: hcal and hdate, command line programs for the Hebrew calendar, dates and times of day information. Also included are library bindings to other programming languages (C++, pascal, python, perl, ruby, php). The api is also of general use for calculating solar times anywhere on Earth for any astronomical date (julian day number). -
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Gcal for Windows
GNU Gcal 4.1 is a program for calculating and printing calendars
Gcal displays hybrid and proleptic Julian and Gregorian calendar sheets, respectively for one month, three months, or a whole year. It also displays eternal holiday lists for many countries around the globe, and features a very powerful creation of fixed date liststhat can be used for reminding purposes. Gcal can calculate various astronomical data and times of the Sun and the Moon for pleasure at any location, precisely enough for most civil purposes. Gcal supports some other calendar systems... -
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Stardate System Tray
Star Trek™ stardate in your Windows™ system tray!
A system tray widget which shows the current Star Trek™ stardate. An Ubuntu et al version can be found at https://launchpad.net/~thebernmeister/+archive/ppa. -
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PECALDAYS
Pecaldays is a powerfull calendar utility for Linux 64bit OSs.
Pecaldays is a powerfull and portable calendar utility for Linux 64bit OSs. ! It is written in C language. Actually , I made it to support my PEDABA (Data Base) Linux application but , I think it will be usefull as a standalone utility too. You can search for any date you want from 01/01/001 a.C to 31/12/2500 A.C to find the corresponding day. You can also add or subtract number of days to a specific date. It is also possible to extend the Julian calendar (for information only about... -
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iLib
The most comprehensive library of Javascript i18n classes available
Note: development has been moved over to github! Please see https://github.com/iLib-js/iLib "I18N" means way more than just translation. Other libraries claim to be an i18n solution when translation and string formatting is really all they offer. Yes, iLib has classes that do translation too, but there is also much, much more. From date formatting to name parsing to phone number handling to collation, iLib has classes that do it. And, it has the ability to support thousands of possible... -
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Months4Mathematica
more calendar conversions, epochs, JDN, moon, +
... and use TAI clock << Months`Months` {PrettyDate[], PrettyDate[calendarChange2[Date[], gregorian, julian], julian], MoonPhase[]} {"Sunday, July 13 2014. 2:37:04 p.m. -4 GMT", "Saturday, Iunius 30 2014. 2:37:04 p.m. -4 GMT", "Full Moon"} timeDeduce, a minor extra: deduce and show other times / angles, using time eqn. input: GMT,lon,tz,arieslon output: input + SHA,Ra,LHA ; in dn,tm or ang (for historic reasons files are also in https://sourceforge.net/projects/periodictablemm/) -
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Dates
Fast calendar calculations for 10,000 years (Julian and Gregorian)
... the chiliads. So how will you be able to do date calculations if you then even try to consider time gimmicks like summer/winter time changes, leap-seconds and so on? Just forget it! This project gives you very short pure date routines that are the fastest ones that you can get, because they don't need any looping for doing their calculations, and they do their calculations from 1/1/0 up to 12/31/9999. Of course they precisely consider the transition from Julian to Gregorian calendar. ;-) -
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juliandate-converter
JDE Julian Dates Convertor
Converts standard date to Julian date -
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GPS Date Converter
A program to convert different GPS date formats.
GPS Date Converter (GDC) is a program to convert six different date formats, including: (1) Decimal year, (2) Year, Month, Day, (3) Year, Day of year, (4) GPS Week, Day of week, (5) Julian date, and (6) Modified Julian date. These formats are quiet common in Earth Sciences, specially GPS applications. More information can be found in the GDC website. -
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STime
ISO 8601-friendly time and date arithmetic.
STime is light-weight set of types and functions for handling dates and times. Features include a combined date and time type, bounded intervals with intersection and union methods, ISO 8601 input and output, relational and arithmetic operators. Two epochs are provided: UNIX and Julian. User-defined epochs are easy to implement. -
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persian-calendar
Java Persian Calendar library
NOTICE: for the time bieng we are at http://code.google.com/p/persian-calendar/ a light-weight and easy to use Persian Calendar system (known as jalali or shamsi) for JDK. algorithms for converting Julian days to the Persian calendar, and vice versa are adopted from "casema.nl/couprie/calmath/persian/index.html" written entirely in VB. The algorithms is not exactly the same as the original. I've done some minor changes in the sake of performances and corrected some bugs -
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dconv is a simple command line utility to deal with dates. Use option --help to see commands. Contact me here: hal9k (at) altervista.org
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This J2ME soft has data about Messier objects, galaxies, open and globular clusters and nebulas. Allows you to make an observation plan according to your interests, see Moon Phases of 2008 and Local Sidereal Time and Julian date. nochesky.googlepages.com
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ephem68k is an astronomy software the TI-92 and TI Voyage 200 CAS systems. It calculates astronomical data like julian date, local sidereal time, full/new moons, ephemerides of fixed and solar objects and more. ephem68k is based on ephem 4.29 code.
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A simple command to convert calendar dates to julian dates. Quite useful in timing situations where you need elapsed time between dates. Also useful for astronomy applications.
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You can find witch day of the week is in the date in Julian or Gregorian calendar since 1-st January 1 year (begining AD) to about 65000y. And you can findout the phase of the moon in few centuries.
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This is an application that computes the date and time in formats appropriate for astronomers - julian date, sidereal time, modified julian date, truncated julian date. Extremely accurate, includes correction for apparent sidereal time.
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Python module to convert dates between different calendar systems (Gregorian, Julian, ISO, Hebrew, Islamic, Mayan, Indian Civil, Baha'i, Persian, French Republican). Additionally, a module exists for retrieving the Gergorian dates for US holidays
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JewelDate is a Library of Julian ,Gregorian and Unix date and time conversion and manipulation functions for PHP.