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The 69th parallel north is a circle of latitude that is 69 degrees north of the Earth's equatorial plane, in the Arctic. It crosses the Atlantic Ocean, Europe, Asia and North America, and passes through some of the southern seas of the Arctic Ocean.
At this latitude the midnight sun lasts from about May 20th to July 22nd, and civil polar twilight from about December 1st to January 11th. At noon on the summer and winter solstices, the altitude of the sun is 44.45° and -1.52° respectively. At midnight on the summer solstice, the altitude of the sun is 2.69°.
If the latitude in northern hemisphere is 69°48′ or smaller, every day in September can view both nautical dawn and dusk. Also, if the latitude in northern hemisphere is 69°10′ or smaller, every day in April can view both civil dawn and dusk.