Time Of Day Data Format

The time-of-day fields used by the Edit Comments chunk (“Edit Comments Chunk”) and the Information chunk (“Information Chunk”) are based on the ISO 8601 specification for time-of-day strings, available from http://www.iso.ch/iso/en/CatalogueListPage.CatalogueList. Time-of-day symbols are shown in Table A-1.

**Table A-1** Symbols used in time-of-day formats
Symbol	Meaning
YYYY	4-digit year
MM	2-digit month (01=January, etc.)
DD	2-digit day of month (01 through 31)
‘T’	separator between date and time fragments
hh	2-digit hour (00 through 23) (am/pm not allowed)
mm	2-digit minute (00 through 59)
ss	2-digit second (00 through 59)

Some example formats are:

Year: YYYY (2005)
Year and month: YYYY-MM (2005-07)
Complete date: YYYY-MM-DD (2005-07-16)
Complete date plus hours, minutes and seconds: YYYY-MM-DDThh:mm:ss (2005-07-16T19:20:30)

Note that the CAF specification’s use of this standard does not include fractional seconds.

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