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curl_getdate(3)		 libcurl Manual		  curl_getdate(3)

     curl_getdate - Convert an date string to number  of  seconds
     since January 1, 1970

     #include <curl/curl.h>

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

     This function returns the number of  seconds  since  January
     1st  1970	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.

     NOTE: This function was rewritten for the 7.12.2 release and
     this  documentation covers the functionality of the new one.
     The new one is not feature-complete with the  old	one,  but
     most  of  the formats supported by the new one was supported
     by the old too.

     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 abbrivations, 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:

     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', `Mon-
	     day', etc or they may be abbreviated to their  first
	     three  letters.  This  is usually not info that adds

libcurl 7.0	    Last change: 12 Aug 2005			1

curl_getdate(3)		 libcurl Manual		  curl_getdate(3)

     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() format. These formats are the only
     ones RFC2616 says HTTP applications may use.

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

     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	    Last change: 12 Aug 2005			2

curl_getdate(3)		 libcurl Manual		  curl_getdate(3)

     The former version of this function was built with yacc  and
     was  not only very large, it was also never quite understood
     and it wasn't possible to build  with  non-GNU  tools  since
     only GNU Bison could make it thread-safe!

     The rewrite was done for 7.12.2. The new one is much smaller
     and use simpler code.

libcurl 7.0	    Last change: 12 Aug 2005			3

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