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 FileMaker Pro Custom Functions

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wc3DateCode( wc3Date ; wc3Time )

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Roger Biel, 2Geckos Consulting, LLC
www.2geckos.com

Returns WC3 date code

Sample Input:
wc3DateCode( "4/10/2012" ; "12:28:00 PM" )
Sample Output:
20120410T122800Z


 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

Description:

The International Standard for the representation of dates and times is ISO 8601. Its full reference number is ISO 8601 : 1988 (E), and its title is "Data elements and interchange formats - Information interchange - Representation of dates and times". A discussion of ISO 8601 has been written by Markus Kuhn.

YYYY = four-digit year
MM = two-digit month (01=January, etc.)
DD = two-digit day of month (01 through 31)
hh = two digits of hour (00 through 23) (am/pm NOT allowed)
mm = two digits of minute (00 through 59)
ss = two digits of second (00 through 59)
s = one or more digits representing a decimal fraction of a second
TZD = time zone designator (Z or +hh:mm or -hh:mm)

I had used the format YYYY-MM-DDThh:mm:ss.sTZD
but have found that the format YYYYMMDDThhmmss.sTZD
is used more often with no separators.

This profile does not specify how many digits may be used to represent the decimal fraction of a second. An adopting standard that permits fractions of a second must specify both the minimum number of digits (a number greater than or equal to one) and the maximum number of digits (the maximum may be stated to be "unlimited").

The formats are as follows. Exactly the components shown here must be present, with exactly this punctuation. Note that the "T" appears literally in the string, to indicate the beginning of the time element, as specified in ISO 8601.

This profile defines two ways of handling time zone offsets:

Times are expressed in UTC (Coordinated Universal Time), with a special UTC designator ("Z").
Times are expressed in local time, together with a time zone offset in hours and minutes. A time zone offset of "+hh:mm" indicates that the date/time uses a local time zone which is "hh" hours and "mm" minutes ahead of UTC. A time zone offset of "-hh:mm" indicates that the date/time uses a local time zone which is "hh" hours and "mm" minutes behind UTC.
A standard referencing this profile should permit one or both of these ways of handling time zone offsets.

Source: http://www.w3.org/TR/NOTE-datetime

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

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