curl_getdate(3) 						  libcurl Manual						   curl_getdate(3)

NAME

       curl_getdate - Convert a date string to number of seconds

SYNOPSIS

       #include <curl/curl.h>

       time_t curl_getdate(char *datestring, time_t *now );

DESCRIPTION

       curl_getdate(3)	returns  the number of seconds since the Epoch, January 1st 1970 00:00:00 in the UTC time zone, for the date and time that
       the datestring parameter specifies. The now parameter is not used, pass a NULL there.

PARSING DATES AND TIMES

       A "date" is a string containing several items separated by whitespace. The order of the items is immaterial.  A	date  string  may  contain
       many flavors of items:

       calendar date items
	       Can  be	specified  several  ways. Month names can only be three-letter english abbreviations, numbers can be zero-prefixed and the
	       year may use 2 or 4 digits.  Examples: 06 Nov 1994, 06-Nov-94 and Nov-94 6.

       time of the day items
	       This string specifies the time on a given day. You must specify it with 6 digits with two colons: HH:MM:SS. To not include the time
	       in a date string, will make the function assume 00:00:00. Example: 18:19:21.

       time zone items
	       Specifies  international time zone. There are a few acronyms supported, but in general you should instead use the specific relative
	       time compared to UTC. Supported formats include: -1200, MST, +0100.

       day of the week items
	       Specifies a day of the week. Days of the week may be spelled out in full (using english): `Sunday', `Monday', etc or  they  may	be
	       abbreviated to their first three letters. This is usually not info that adds anything.

       pure numbers
	       If  a  decimal  number of the form YYYYMMDD appears, then YYYY is read as the year, MM as the month number and DD as the day of the
	       month, for the specified calendar date.

EXAMPLES

       Sun, 06 Nov 1994 08:49:37 GMT
       Sunday, 06-Nov-94 08:49:37 GMT
       Sun Nov	6 08:49:37 1994
       06 Nov 1994 08:49:37 GMT
       06-Nov-94 08:49:37 GMT
       Nov  6 08:49:37 1994
       06 Nov 1994 08:49:37
       06-Nov-94 08:49:37
       1994 Nov 6 08:49:37
       GMT 08:49:37 06-Nov-94 Sunday
       94 6 Nov 08:49:37
       1994 Nov 6
       06-Nov-94
       Sun Nov 6 94
       1994.Nov.6
       Sun/Nov/6/94/GMT
       Sun, 06 Nov 1994 08:49:37 CET
       06 Nov 1994 08:49:37 EST
       Sun, 12 Sep 2004 15:05:58 -0700
       Sat, 11 Sep 2004 21:32:11 +0200
       20040912 15:05:58 -0700
       20040911 +0200

STANDARDS

       This parser was written to handle date formats specified in RFC 822 (including the update in RFC 1123) using time zone name  or	time  zone
       delta  and  RFC	850 (obsoleted by RFC 1036) and ANSI C's asctime() format. These formats are the only ones RFC 7231 says HTTP applications
       may use.

RETURN VALUE

       This function returns -1 when it fails to parse the date string. Otherwise it returns the number of seconds as described.

       If the year is larger than 2037 on systems with 32 bit time_t, this function will return 0x7fffffff (since that	is  the  largest  possible
       signed 32 bit number).

       Having  a 64 bit time_t is not a guarantee that dates beyond 03:14:07 UTC, January 19, 2038 will work fine. On systems with a 64 bit time_t
       but with a crippled mktime(), curl_getdate(3) will return -1 in this case.

SEE ALSO

       curl_easy_escape(3), curl_easy_unescape(3), CURLOPT_TIMECONDITION(3), CURLOPT_TIMEVALUE(3)

libcurl 7.54.0							 February 03, 2016						   curl_getdate(3)