NCEP analyse
UTC
    Dec
    Wed
    30
    00
    Dec
    Thu
    31
    00
    Jan
    Fri
    1
    00
    Jan
    Sat
    2
    00
    Jan
    Sun
    3
    00
    Jan
    Mon
    4
    00
    Jan
    Tue
    5
    00
    Jan
    Wed
    6
    00