JDate, JDNum and Delta T

Julian Date, Julian Day Number and ΔT Table Calculator
BC 9999-Mar-16-Sat to AD 9999-Dec-30-Thu

PHP Program By Jay Tanner - 2025 - Built Around the NASA/JPL Horizons API

Start Date
BC|AD Year-Month-Day

Stop Date
BC|AD Year-Month-Day

Double-Click Within Text Area to Select ALL Text

==============================================================================
    JULIAN DATE, JULIAN DAY NUMBER and DELTA−T (TDB − UT) TABLE CALCULATOR
                           00:00:00 UT ON EACH DATE


  Calendar_Date       J_Date     JD_Num    Delta_T  dd hh:mm:ss   =   Seconds
==================  ==========  ========  =====================================
AD 2025-Jan-22-Wed   2460697.5   2460698   +0d 00:01:09.184511    +69.184511
==================  ==========  ========  =====================================
  Calendar_Date       J_Date     JD_Num    Delta_T  dd hh:mm:ss   =   Seconds

Double-Click Within Text Area to Select ALL Text

Program by Jay Tanner
v1.00 - Revised: 1970-January-01-Thursday at Local Time 12:00:00 AM (UTC−05:00)