types = [
    ((-7, -11, -20), 0, 'LMT'),
    (-6, 1, 'MDT'),
    (-7, 0, 'MST'),
    (-6, 1, 'MWT'),
    (-6, 1, 'MPT'),
    (-6, 0, 'CST')
]
times = [
    ((1, 1, 2, 0, 0), 0),
    ((1905, 9, 1, 7, 11, 20), 2),
    ((1918, 4, 14, 9, 0), 1),
    ((1918, 10, 27, 8, 0), 2),
    ((1942, 2, 9, 9, 0), 3),
    ((1945, 8, 14, 23, 0), 4),
    ((1945, 9, 30, 8, 0), 2),
    ((1946, 4, 28, 9, 0), 1),
    ((1946, 10, 13, 8, 0), 2),
    ((1947, 4, 27, 9, 0), 1),
    ((1947, 9, 28, 8, 0), 2),
    ((1948, 4, 25, 9, 0), 1),
    ((1948, 9, 26, 8, 0), 2),
    ((1949, 4, 24, 9, 0), 1),
    ((1949, 9, 25, 8, 0), 2),
    ((1957, 4, 28, 9, 0), 1),
    ((1957, 10, 27, 8, 0), 2),
    ((1959, 4, 26, 9, 0), 1),
    ((1959, 10, 25, 8, 0), 2),
    ((1960, 4, 24, 9, 0), 1),
    ((1960, 9, 25, 8, 0), 2),
    ((1961, 4, 30, 9, 0), 1),
    ((1961, 9, 24, 8, 0), 2),
    ((1972, 4, 30, 9, 0), 5)
]
posix = 'CST6'
