40th parallel north

40°

40th parallel north

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The 40th parallel north is a circle of latitude that is 40 degrees north of the Earth's equatorial plane. It crosses Europe, the Mediterranean Sea, Asia, the Pacific Ocean, North America, and the Atlantic Ocean.

At this latitude the sun is visible for 15 hours, 1 minute and 28 seconds during the summer solstice and 9 hours, 20 minutes during the winter solstice.^[1] On 21 June, the maximum altitude of the sun is 73.44 degrees, while it's 26.56 degrees on 21 December.^{[citation needed]}

The maximum altitude of the Sun is > 35.00º in October and > 28.00º in November.

The 40th parallel north is the southern baseline for Canada's National Topographic System.

^ "Duration of Daylight/Darkness Table for One Year". U.S. Naval Observatory. 2019-09-24. Archived from the original on 2019-10-12. Retrieved 2021-03-10.

[1] "Duration of Daylight/Darkness Table for One Year". U.S. Naval Observatory. 2019-09-24. Archived from the original on 2019-10-12. Retrieved 2021-03-10.

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