Longpela Expertise logo
Longpela Expertise Consulting
Longpela Expertise
Home | Press Room | Contact Us | Site Map
FAQ


Tools: Julian Date Converter

 

Today's date is 02-Dec-2024 (UTC).
Today's Julian Date is 24337 .


Convert

Date or Julian Date:


Notes About Julian Dates

We refer to a yyddd date format (yy = year, ddd=day) as a 'Julian Date' - this is the common term for such a date in mainframe and other circles. However technically, a Julian date can mean different things. Astronomers refer to a Julian date as the number of days since the beginning of the Julian Period (January 1, 4713 BC). The Smithsonian Astrophysical Observatory introduced the 'Modified Julian Date' to record the orbit of the Sputnik satellite in 18 bits.

A yyddd (or similar format such as yyyyddd, yy-ddd) date is more correctly called an ordinal date. However in the mainframe world, we call them 'Julian Dates', and so we've used this term on this page.

Instructions:

Use this tool to convert between date and Julian (yyddd) date formats.

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

Remember:

  • This tool can only convert date values after Jan 1, 1970.


Longpela Expertise understand what's 'under the hood' of z/OS and related systems like CICS and IMS.
We can read dumps, diagnose complex problems, and write and maintain assembler routines.
Contact us to get your own z/OS internals expert.

© Copyright 2011-2017 Longpela Expertise  |  ABN 55 072 652 147
Legal Disclaimer | Privacy Policy Australia
Website Design: Hecate Jay