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Astronomers and scientific software use the Julian date today to calculate the number of days between two important events. Many orthodox Christian churches also follow the Julian calendar to celebrate religious days.
Enter a valid date or Julian date, and click 'Convert'. To see an example, click 'Show Example'. Enter dates in the form mm/dd/yy, dd-mmm-yyyy, 'today', '+1 day' or similar. Enter Julian dates in the format yyddd, yy-ddd or yy.ddd.
The system is particularly useful for simplifying the calculation of time intervals between different events and for integrating time-related data from diverse sources. This tool converts between UTC (Coordinated Universal Time) and Julian dates.
Convert from calendar date and time to Julian date, and vice versa. Enter either a Calendar date, or a Julian date and click Calculate. This calculator is a modified version from the U.S. Naval Observatory.
Use this tool to convert a specified calendar date/time to an equivalent Julian Day (JD) number. Enter a date as year - month - day (e.g., 2000-01-01) with an optional time separated from the date with either a space or underbar _ (e.g., 2000-01-01 12:00).
Julian dates (abbreviated JD) are simply a continuous count of days and fractions since noon Universal Time on January 1, 4713 BC (on the Julian calendar). Almost 2.5 million days have...
Day-of-Year (JDay) The calculator is bi-directional*. Make Calendar. Select Month / Day / Year and press the "Show_Calendar" button. The Calendar will be displayed in Regular and/or Julian Date Format. Compute JDay from Month / Day / Year*.
CalendarLabs makes determining the Julian and Gregorian dates for today or any date a breeze. Here is how you can do it. Enter the Gregorian date, hours, and minutes and click ‘Calculate,’ the tool will generate the corresponding Julian date in many formats, including the modified Julian date.
Although JD zero was 1st January 4713 BCE, this calculator will allow negative Julian Dates, and years with up to six figures. The following assumptions are made: Weeks have always had seven days, named as now, since time began.
Get the free "Julian Date Converter" widget for your website, blog, Wordpress, Blogger, or iGoogle. Find more Units & Measures widgets in Wolfram|Alpha.