"Commonly-used date structures"

WEEKDAYS = {
    0:'Monday', 1:'Tuesday', 2:'Wednesday', 3:'Thursday', 4:'Friday',
    5:'Saturday', 6:'Sunday'
}
WEEKDAYS_REV = {
    'monday':0, 'tuesday':1, 'wednesday':2, 'thursday':3, 'friday':4,
    'saturday':5, 'sunday':6
}
MONTHS = {
    1:'January', 2:'February', 3:'March', 4:'April', 5:'May', 6:'June',
    7:'July', 8:'August', 9:'September', 10:'October', 11:'November',
    12:'December'
}
MONTHS_3 = {
    1:'jan', 2:'feb', 3:'mar', 4:'apr', 5:'may', 6:'jun', 7:'jul', 8:'aug',
    9:'sep', 10:'oct', 11:'nov', 12:'dec'
}
MONTHS_3_REV = {
    'jan':1, 'feb':2, 'mar':3, 'apr':4, 'may':5, 'jun':6, 'jul':7, 'aug':8,
    'sep':9, 'oct':10, 'nov':11, 'dec':12
}
MONTHS_AP = { # month names in Associated Press style
    1:'Jan.', 2:'Feb.', 3:'March', 4:'April', 5:'May', 6:'June', 7:'July',
    8:'Aug.', 9:'Sept.', 10:'Oct.', 11:'Nov.', 12:'Dec.'
}