{ 'datetime' => '%c',
'date' => '%x',
'time' => '%X',
'weekday' => '%A',
'weekday.abbr' => '%a',
'weekday.number' => '%w',
'month' => '%B',
'month.abbr' => '%b',
'month.number' => '%m',
'month.day' => '%d',
'month.day.abbr' => '%e',
'year' => '%Y',
'year.abbr' => '%y',
'year.day' => '%j',
'year.week' => '%U',
'year.week.sunday'=> '%U',
'year.week.monday'=> '%W',
'hour' => '%I',
'hour.12' => '%I',
'hour.24' => '%H',
'minute' => '%M',
'second' => '%S',
'AMPM' => '%P',
'ampm' => '%p',
'timezone' => '%Z',
'percent' => '%%'
}