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    Bortle 6

    Middle Fork River Forest Preserve International Dark Sky Park

    Illinois, United States40.3800°, -87.9700°Peak altitude 21°11.4h peak darknessBest: Jun, May, Jul, Apr, Aug, Mar, Sep, Feb, Oct

    Milky Way Calendar

    Nightly visibility ratings for Middle Fork River Forest Preserve International Dark Sky Park

    Recognition

    Year designated

    2018

    Recognized by

    DarkSky International

    DSAG class

    2a

    Area

    688 ha

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