Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
Time Conversion Tool

Use this tool to convert from calendar date/time format to Julian date and vice versa. Optionally convert between selected world time zones and determine the day-of-week for the specified date.

Enter a calendar date and time
(year-month-day hour:minute:second)...
Date and Time
  using calendar date and time

or Enter a Julian date ...
UT   using Julian date
    

Equivalent Times


Input Time Zone: UT
-------------------------------------------------------
A.D. 2018-May-20 09:57:10.00 = A.D. 2018-May-20.4146991
A.D.  2018-05-20 09:57:10.00 = A.D.  2018-05-20.4146991
A.D.   2018--140 09:57:10.00 = A.D.   2018--140.4146991

Day-of-Week: Sunday


Alternate Time Zone: UT-7 (MST/PDT)
-------------------------------------------------------
A.D. 2018-May-20 02:57:10.00 = A.D. 2018-May-20.1230324
A.D.  2018-05-20 02:57:10.00 = A.D.  2018-05-20.1230324
A.D.   2018--140 02:57:10.00 = A.D.   2018--140.1230324

Day-of-Week: Sunday

Julian Date
------------------
2458258.9146991 UT
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2018-May-20 09:57 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin