Software Venture Consulting

FileMaker Pro downloads & Resources
FileMaker Custom Functions
FileMaker Web Viewer Examples
FileMaker Pro & Lasso Consulting
FileMaker Books
FileMaker Articles
FileMaker Error Reference

Free Web Tools
Free FileMaker Tools

Personal Pages

Shopping Cart
Shopping Cart


Free Newsletter


Privacy Policy

FileMaker is a registered trademark of FileMaker, Inc. in the U.S. and other countries.


 FileMaker Pro Custom Functions

List  |  Show Random  |  Upload  |  Add This to Your Site

DateToJD ( thedate ; gregorian )

Rate this function:  

  Average rating: 4.5  (31 votes)
  Discuss this Custom Function

Theo Ros, *

converts a date into a Julian Day number

Sample Input:
DateToJD ( Get ( CurrentDate ) ; 1 )
Sample Output:

 Then copy & paste into FileMaker Advanced's Edit Custom Function window.

Click here to copy To Clip Manager if you have myFMbutler's Clip Manager installed


Returns a Julian Daynumber for date in 'thedate'
this number is based on November 24 -4713 (=day zero Gregorian)
which is January 1 -4712 (January 1 4713 BC) Julian.

In: thedate - a FileMaker Date field.
if empty, the function uses the current date
gregorian - optional: if <> 0 or empty use Gregorian calendar
if 0 use Julian calendar
defaults to Gregorian calendar

Return type: Number
Syntax: DateToJD ( thedate )
Return type: Number

Note: these functions are not guaranteed or supported by Please contact the individual developer with any questions or problems.

This is my Custom Function and I want to edit it


There are no comments yet. Be the first to post a comment about this Custom Function! Please try to keep it brief & to the point. Anyone can post:

Your Name:
characters left. If you paste in more than 1500 characters, it will be truncated. Discuss the function - advertisements and other useless posts will be deleted.
Answer 2 + 5 =
Search for Custom Functions:

Custom Functions Widget
Download the Custom Function Dashboard Widget for OS X
Keep all the latest Custom Functions right at your fingertips!

Newest Custom Functions:

1. PreviousMonthEndDate ( myDate )
  (Wed, Mar 07, 3:35am)
2. PreviousMonthName (myDate)
  (Wed, Mar 07, 3:33am)
3. FmTableFields ( tableName ; fieldsInclude ; fieldsExclude ; classExclude ; typeExclude ; prefixExclude )
  (Fri, Mar 02, 6:32am)
4. sql.getTable ( fullyQualifiedFieldObject )
  (Thu, Feb 22, 8:36am)
5. sql.getField ( fullyQualifiedFieldObject )
  (Thu, Feb 22, 8:34am)
6. FilterOut ( ListA ; ListB )
  (Wed, Feb 21, 6:11pm)
7. Char0 ( )
  (Sun, Feb 18, 2:35am)
8. CreateVCardFile ( FirstName ; LastName ; CompanyName ; Phone ; Email ; WEB ; hAddress1 ; hAddress2 ; hZip ; hCity ; hCountry ; wAddress1 ; wAddress2 ; wZip ; wCity%2
  (Sun, Feb 18, 1:50am)

RSS Feed of Custom Functions