NCEP analyse
UTC
    Mar
    Tue
    31
    00
    Apr
    Wed
    1
    00
    Apr
    Thu
    2
    00
    Apr
    Fri
    3
    00
    Apr
    Sat
    4
    00
    Apr
    Sun
    5
    00
    Apr
    Mon
    6
    00
    Apr
    Tue
    7
    00