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    USNO Nav. Star Chart how Old?
    From: Herman Dekker
    Date: 2020 Jun 3, 13:36 -0700

    I looked at the USNO Nav. Star Chart and discovered that the SHA for polaris from the Chart is about 328°
    But from one year 2020 almanac the SHA is about 316°. That's a big difference.
    I looked for few other stars SHA but the difference is minor compared with SHA Polaris.
    So I wondered how old is the USNO Nav. Star Chart?
    And is Polaris one lonely fast runner in SHA?

    regards
    HermanD 52°N 04°E

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