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The following expression prefixes return the contents of the HTTP Date header as 
text or as a date object.

These values can be evaluated as follows:

•

As a number. The numeric value of an HTTP Date header is returned in the 
form of the number of seconds since Jan 1 1970. 

For example, the expression http.req.date.mod(86400) returns 
the number of seconds since the beginning of the day. These values can be 
evaluated using the same operations as other non-date-related numeric data. 
For more information, see 

.

•

As an HTTP header. Date headers can be evaluated using the same 
operations as other HTTP headers. 

For more information, see 

•

As text. Date headers can be evaluated using the same operations as other 
strings. 

For more information, see 

.

HTTP.REQ.DATE

Returns the contents of the HTTP Date header as 
text or as a date object.The date formats 
recognized are:

RFC822. Sun, 06 Jan 1980 08:49:37 GMT

RFC850. Sunday, 06-Jan-80 09:49:37 GMT

ASCTIME. Sun Jan 6 08:49:37 1980

HTTP.RES.DATE

Returns the contents of the HTTP Date header as 
text or as a date object.The date formats 
recognized are:

RFC822. Sun, 06 Jan 1980 8:49:37 GMT

RFC850. Sunday, 06-Jan-80 9:49:37 GMT

ASCTIME. Sun Jan 6 08:49:37 1980