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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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22 .TH curl_getdate 3 "12 Aug 2005" "libcurl 7.0" "libcurl Manual"
23 .SH NAME
24 curl_getdate - Convert a date string to number of seconds
25 .SH SYNOPSIS
26 .B #include <curl/curl.h>
27 .sp
28 .BI "time_t curl_getdate(char *" datestring ", time_t *"now " );"
29 .ad
30 .SH DESCRIPTION
31 \fIcurl_getdate(3)\fP returns the number of seconds since the Epoch, January
32 1st 1970 00:00:00 in the UTC time zone, for the date and time that the
33 \fIdatestring\fP parameter specifies. The \fInow\fP parameter is not used,
34 pass a NULL there.
35 .SH PARSING DATES AND TIMES
36 A "date" is a string containing several items separated by whitespace. The
37 order of the items is immaterial. A date string may contain many flavors of
38 items:
39 .TP 0.8i
40 .B calendar date items
41 Can be specified several ways. Month names can only be three-letter english
42 abbreviations, numbers can be zero-prefixed and the year may use 2 or 4 digits.
43 Examples: 06 Nov 1994, 06-Nov-94 and Nov-94 6.
44 .TP
45 .B time of the day items
46 This string specifies the time on a given day. You must specify it with 6
47 digits with two colons: HH:MM:SS. To not include the time in a date string,
48 will make the function assume 00:00:00. Example: 18:19:21.
49 .TP
50 .B time zone items
51 Specifies international time zone. There are a few acronyms supported, but in
52 general you should instead use the specific relative time compared to
53 UTC. Supported formats include: -1200, MST, +0100.
54 .TP
55 .B day of the week items
56 Specifies a day of the week. Days of the week may be spelled out in full
57 (using english): `Sunday', `Monday', etc or they may be abbreviated to their
58 first three letters. This is usually not info that adds anything.
59 .TP
60 .B pure numbers
61 If a decimal number of the form YYYYMMDD appears, then YYYY is read as the
62 year, MM as the month number and DD as the day of the month, for the specified
63 calendar date.
64 .PP
65 .SH EXAMPLES
66 .nf
67 Sun, 06 Nov 1994 08:49:37 GMT
68 Sunday, 06-Nov-94 08:49:37 GMT
69 Sun Nov 6 08:49:37 1994
70 06 Nov 1994 08:49:37 GMT
71 06-Nov-94 08:49:37 GMT
72 Nov 6 08:49:37 1994
73 06 Nov 1994 08:49:37
74 06-Nov-94 08:49:37
75 1994 Nov 6 08:49:37
76 GMT 08:49:37 06-Nov-94 Sunday
77 94 6 Nov 08:49:37
78 1994 Nov 6
79 06-Nov-94
80 Sun Nov 6 94
81 1994.Nov.6
82 Sun/Nov/6/94/GMT
83 Sun, 06 Nov 1994 08:49:37 CET
84 06 Nov 1994 08:49:37 EST
85 Sun, 12 Sep 2004 15:05:58 -0700
86 Sat, 11 Sep 2004 21:32:11 +0200
87 20040912 15:05:58 -0700
88 20040911 +0200
89 .fi
90 .SH STANDARDS
91 This parser was written to handle date formats specified in RFC 822 (including
92 the update in RFC 1123) using time zone name or time zone delta and RFC 850
93 (obsoleted by RFC 1036) and ANSI C's asctime() format. These formats are the
94 only ones RFC 7231 says HTTP applications may use.
95 .SH RETURN VALUE
96 This function returns -1 when it fails to parse the date string. Otherwise it
97 returns the number of seconds as described.
98
99 On systems with a signed 32 bit time_t: if the year is larger than 2037 or
100 less than 1903, this function will return -1.
101
102 On systems with an unsigned 32 bit time_t: if the year is larger than 2106 or
103 less than 1970, this function will return -1.
104
105 On systems with 64 bit time_t: if the year is less than 1583, this function
106 will return -1. (The Gregorian calendar was first introduced 1582 so no "real"
107 dates in this way of doing dates existed before then.)
108 .SH "SEE ALSO"
109 .BR curl_easy_escape "(3), " curl_easy_unescape "(3), "
110 .BR CURLOPT_TIMECONDITION "(3), " CURLOPT_TIMEVALUE "(3) "