curl_getdate man page on Archlinux

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curl_getdate(3)			libcurl Manual		       curl_getdate(3)

       curl_getdate - Convert a date string to number of seconds

       #include <curl/curl.h>

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

       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.

       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 usu‐
	       ally 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.

       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
       Sun Nov 6 94
       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

       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()  for‐
       mat. These formats are the only ones RFC2616 says HTTP applications may

       This function returns -1 when it fails to parse the date string. Other‐
       wise 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 will return -1 in this case.

libcurl 7.0			  12 Aug 2005		       curl_getdate(3)

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