The Julian Date Calculator gives the user a simple and quick way to convert between Coordinated Universal Time (UTC) in the Gregorian Calendar to the Julian Date as well as the following selection of additional epochs and time systems:
- Modified Julian Date
- Reduced Julian Date
- Truncated Julian Date (NIST and NASA)
- Dublin Julian Day
- Lilian Day Number
- ANSI Date
- Rata Die
- Unix Time
- RAMSES Time
- GPS Time
The Julian date (JD) is the number of days and fractions of a day since noon January 1, 4713 BC at Greenwich. The Modified Julian Date (MJD) has an offset of 2,400,000.5 days from the Julian Date and hence starts at midnight November 17, 1858. The Julian Date is often used for scientific time measurement by the astronomy community and was introduced to provide a single system of dates that could be used when working with different calendars.
Requires iOS 4.3 or later. Compatible with iPhone, iPad, and iPod touch.
Julian Date Calculator is a free trial software application from the System Maintenance subcategory, part of the System Utilities category.
The app is currently available in English and it was last updated on 2010-02-27. The program can be installed on iOS.
Julian Date Calculator (version 1.5) has a file size of 419.43 KB and is available for download from our website.
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