CharT
string specifying the conversion format
The format string consists of zero or more conversion specifiers, whitespace characters, and ordinary characters (except %
). Each ordinary character is expected to match one character in the input stream in case-insensitive comparison. Each whitespace character matches arbitrary whitespace in the input string. Each conversion specification begins with %
character, optionally followed by E
or O
modifier (ignored if unsupported by the locale), followed by the character that determines the behavior of the specifier. The format specifiers match the POSIX function strptime()
:
%
matches a literal %
. The full conversion specification must be %%
(none) t
matches any whitespace (none) n
matches any whitespace (none) Year Y
parses full year as a 4 digit decimal number, leading zeroes permitted but not required tm_year
EY
parses year in the alternative representation, e.g.å¹³æ23å¹´ (year Heisei 23) which writes 2011 to tm_year in ja_JP locale tm_year
y
parses last 2 digits of year as a decimal number. Range [69,99]
results in values 1969 to 1999, range [00,68]
results in 2000-2068 tm_year
Oy
parses last 2 digits of year using the alternative numeric system, e.g. åä¸ is parsed as 11 in ja_JP locale tm_year
Ey
parses year as offset from locale's alternative calendar period %EC
tm_year
C
parses the first 2 digits of year as a decimal number (range [00,99]
) tm_year
EC
parses the name of the base year (period) in the locale's alternative representation, e.g. å¹³æ (Heisei era) in ja_JP tm_year
Month b
parses the month name, either full or abbreviated, e.g. Oct
tm_mon
h
synonym of b
tm_mon
B
synonym of b
tm_mon
m
parses the month as a decimal number (range [01,12]
), leading zeroes permitted but not required tm_mon
Om
parses the month using the alternative numeric system, e.g. åäº parses as 12 in ja_JP locale tm_mon
Week U
parses the week of the year as a decimal number (Sunday is the first day of the week) (range [00,53]
), leading zeroes permitted but not required tm_year
, tm_wday
, tm_yday
OU
parses the week of the year, as by %U
, using the alternative numeric system, e.g. äºåäº parses as 52 in ja_JP locale tm_year
, tm_wday
, tm_yday
W
parses the week of the year as a decimal number (Monday is the first day of the week) (range [00,53]
), leading zeroes permitted but not required tm_year
, tm_wday
, tm_yday
OW
parses the week of the year, as by %W
, using the alternative numeric system, e.g. äºåäº parses as 52 in ja_JP locale tm_year
, tm_wday
, tm_yday
Day of the year/month j
parses day of the year as a decimal number (range [001,366]
), leading zeroes permitted but not required tm_yday
d
parses the day of the month as a decimal number (range [01,31]
), leading zeroes permitted but not required tm_mday
Od
parses the day of the month using the alternative numeric system, e.g. äºåä¸ parses as 27 in ja_JP locale, leading zeroes permitted but not required tm_mday
e
synonym of d
tm_mday
Oe
synonym of Od
tm_mday
Day of the week a
parses the name of the day of the week, either full or abbreviated, e.g. Fri
tm_wday
A
synonym of a
tm_wday
w
parses weekday as a decimal number, where Sunday is 0
(range [0-6]
) tm_wday
Ow
parses weekday as a decimal number, where Sunday is 0
, using the alternative numeric system, e.g. äº parses as 2 in ja_JP locale tm_wday
Hour, minute, second H
parses the hour as a decimal number, 24 hour clock (range [00-23]
), leading zeroes permitted but not required tm_hour
OH
parses hour from 24-hour clock using the alternative numeric system, e.g. åå
« parses as 18 in ja_JP locale tm_hour
I
parses hour as a decimal number, 12 hour clock (range [01,12]
), leading zeroes permitted but not required tm_hour
OI
parses hour from 12-hour clock using the alternative numeric system, e.g. å
reads as 06 in ja_JP locale tm_hour
M
parses minute as a decimal number (range [00,59]
), leading zeroes permitted but not required tm_min
OM
parses minute using the alternative numeric system, e.g. äºåäº parses as 25 in ja_JP locale tm_min
S
parses second as a decimal number (range [00,60]
), leading zeroes permitted but not required tm_sec
OS
parses second using the alternative numeric system, e.g. äºåå parses as 24 in ja_JP locale tm_sec
Other c
parses the locale's standard date and time string format, e.g. Sun Oct 17 04:41:13 2010
(locale dependent) all Ec
parses the locale's alternative date and time string format, e.g. expecting å¹³æ23å¹´ (year Heisei 23) instead of 2011å¹´ (year 2011) in ja_JP locale all x
parses the locale's standard date representation all Ex
parses the locale's alternative date representation, e.g. expecting å¹³æ23å¹´ (year Heisei 23) instead of 2011å¹´ (year 2011) in ja_JP locale all X
parses the locale's standard time representation all EX
parses the locale's alternative time representation all D
equivalent to "%m / %d / %y " tm_mon
, tm_mday
, tm_year
r
parses locale's standard 12-hour clock time (in POSIX, "%I : %M : %S %p") tm_hour
, tm_min
, tm_sec
R
equivalent to "%H : %M" tm_hour
, tm_min
T
equivalent to "%H : %M : %S" tm_hour
, tm_min
, tm_sec
p
parses the locale's equivalent of a.m. or p.m. tm_hour
Note: tm_isdst
is not written to, and needs to be set explicitly for use with functions such as mktime
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