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    Bortle 4

    Boundary Waters Canoe Area International Dark Sky Sanctuary

    North Dakota, United States48.0200°, -99.2100°Peak altitude 13°11.8h peak darknessBest: May, Apr, Jul, Aug, Mar, Jun, Sep

    Milky Way Calendar

    Nightly visibility ratings for Boundary Waters Canoe Area International Dark Sky Sanctuary

    Recognition

    Year designated

    2020

    Recognized by

    DarkSky International

    DSAG class

    2a

    Area

    444,345 ha

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