时间格式

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Format    Meaning

%a    The abbreviated weekday name (“Sun'’)

%A    The full weekday name (“Sunday'’)

%b    The abbreviated month name (“Jan'’)

%B    The full month name (“January'’)

%c    The preferred local date and time representation

%d    Day of the month (01..31)

%H    Hour of the day, 24-hour clock (00..23)

%I    Hour of the day, 12-hour clock (01..12)

%j    Day of the year (001..366)

%m    Month of the year (01..12)

%M    Minute of the hour (00..59)

%p    Meridian indicator (“AM'’ or “PM'’)

%S    Second of the minute (00..60)

%U    Week number of the current year, starting with the first Sunday as the first day of the first week (00..53)

%W    Week number of the current year, starting with the first Monday as the first day of the first week (00..53)

%w    Day of the week (Sunday is 0, 0..6)

%x    Preferred representation for the date alone, no time

%X    Preferred representation for the time alone, no date

%y    Year without a century (00..99)

%Y    Year with century

%Z    Time zone name

%%    Literal “%'’ character