The Julian Day Number for Any Gregorian Calendar Date after 1900.

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Abstract:

Compact formulas and FORTRAN subprograms are presented to compute the Julian day number, day of the week, and modified Julian day number for any Gregorian calendar date. The inverse problem of recovering the Gregorian calendar date from a known Julian day number is also presented. Basic astronomical applications are discussed as well as the precision requirements.

Author(s):
Eisele, John A. ; Shannon, Paul E. V.
Author Organization(s):
NAVAL RESEARCH LAB WASHINGTON D C
Descriptive Note:
Final rept.,
Pagination:
0015

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
NRL-MR-3100
Project Number(s):
NRL-B02-30, X3143-63723N
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*COMPUTER PROGRAMMING, *ASTRONOMY, *DIURNAL VARIATIONS, CONVERSION, COMPUTATIONS, FORTRAN, SUBROUTINES
Field(s)/Group(s):
Astronomy, Computer Programming and Software
Keyword(s):
*Julian day numbers, *Gregorian calendars
Report Date:
1975 Aug 01