NSDate format string in objective-c
2011-03-17 15:46
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a: AM/PM
A: 0~86399999 (Millisecond of Day)
c/cc: 1~7 (Day of Week) ccc: Sun/Mon/Tue/Wed/Thu/Fri/Sat cccc: Sunday/Monday/Tuesday/Wednesday/Thursday/Friday/Saturday
d: 1~31 (0 padded Day of Month) D: 1~366 (0 padded Day of Year)
e: 1~7 (0 padded Day of Week) E~EEE: Sun/Mon/Tue/Wed/Thu/Fri/Sat EEEE: Sunday/Monday/Tuesday/Wednesday/Thursday/Friday/Saturday
F: 1~5 (0 padded Week of Month, first day of week = Monday)
g: Julian Day Number (number of days since 4713 BC January 1) G~GGG: BC/AD (Era Designator Abbreviated) GGGG: Before Christ/Anno Domini
h: 1~12 (0 padded Hour (12hr)) H: 0~23 (0 padded Hour (24hr))
k: 1~24 (0 padded Hour (24hr) K: 0~11 (0 padded Hour (12hr))
L/LL: 1~12 (0 padded Month) LLL: Jan/Feb/Mar/Apr/May/Jun/Jul/Aug/Sep/Oct/Nov/Dec LLLL: January/February/March/April/May/June/July/August/September/October/November/December
m: 0~59 (0 padded Minute) M/MM: 1~12 (0 padded Month) MMM: Jan/Feb/Mar/Apr/May/Jun/Jul/Aug/Sep/Oct/Nov/Dec MMMM: January/February/March/April/May/June/July/August/September/October/November/December
q/qq: 1~4 (0 padded Quarter) qqq: Q1/Q2/Q3/Q4 qqqq: 1st quarter/2nd quarter/3rd quarter/4th quarter Q/QQ: 1~4 (0 padded Quarter) QQQ: Q1/Q2/Q3/Q4 QQQQ: 1st quarter/2nd quarter/3rd quarter/4th quarter
s: 0~59 (0 padded Second) S: (rounded Sub-Second)
u: (0 padded Year)
v~vvv: (General GMT Timezone Abbreviation) vvvv: (General GMT Timezone Name)
w: 1~53 (0 padded Week of Year, 1st day of week = Sunday, NB: 1st week of year starts from the last Sunday of last year) W: 1~5 (0 padded Week of Month, 1st day of week = Sunday)
y/yyyy: (Full Year) yy/yyy: (2 Digits Year) Y/YYYY: (Full Year, starting from the Sunday of the 1st week of year) YY/YYY: (2 Digits Year, starting from the Sunday of the 1st week of year)
z~zzz: (Specific GMT Timezone Abbreviation) zzzz: (Specific GMT Timezone Name) Z: +0000 (RFC 822 Timezone)
c/cc: 1~7 (Day of Week) ccc: Sun/Mon/Tue/Wed/Thu/Fri/Sat cccc: Sunday/Monday/Tuesday/Wednesday/Thursday/Friday/Saturday
d: 1~31 (0 padded Day of Month) D: 1~366 (0 padded Day of Year)
e: 1~7 (0 padded Day of Week) E~EEE: Sun/Mon/Tue/Wed/Thu/Fri/Sat EEEE: Sunday/Monday/Tuesday/Wednesday/Thursday/Friday/Saturday
F: 1~5 (0 padded Week of Month, first day of week = Monday)
g: Julian Day Number (number of days since 4713 BC January 1) G~GGG: BC/AD (Era Designator Abbreviated) GGGG: Before Christ/Anno Domini
h: 1~12 (0 padded Hour (12hr)) H: 0~23 (0 padded Hour (24hr))
k: 1~24 (0 padded Hour (24hr) K: 0~11 (0 padded Hour (12hr))
L/LL: 1~12 (0 padded Month) LLL: Jan/Feb/Mar/Apr/May/Jun/Jul/Aug/Sep/Oct/Nov/Dec LLLL: January/February/March/April/May/June/July/August/September/October/November/December
m: 0~59 (0 padded Minute) M/MM: 1~12 (0 padded Month) MMM: Jan/Feb/Mar/Apr/May/Jun/Jul/Aug/Sep/Oct/Nov/Dec MMMM: January/February/March/April/May/June/July/August/September/October/November/December
q/qq: 1~4 (0 padded Quarter) qqq: Q1/Q2/Q3/Q4 qqqq: 1st quarter/2nd quarter/3rd quarter/4th quarter Q/QQ: 1~4 (0 padded Quarter) QQQ: Q1/Q2/Q3/Q4 QQQQ: 1st quarter/2nd quarter/3rd quarter/4th quarter
s: 0~59 (0 padded Second) S: (rounded Sub-Second)
u: (0 padded Year)
v~vvv: (General GMT Timezone Abbreviation) vvvv: (General GMT Timezone Name)
w: 1~53 (0 padded Week of Year, 1st day of week = Sunday, NB: 1st week of year starts from the last Sunday of last year) W: 1~5 (0 padded Week of Month, 1st day of week = Sunday)
y/yyyy: (Full Year) yy/yyy: (2 Digits Year) Y/YYYY: (Full Year, starting from the Sunday of the 1st week of year) YY/YYY: (2 Digits Year, starting from the Sunday of the 1st week of year)
z~zzz: (Specific GMT Timezone Abbreviation) zzzz: (Specific GMT Timezone Name) Z: +0000 (RFC 822 Timezone)
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