The 25th parallel north is a circle of latitude that is 25 degrees north of the Earth's equatorial plane. It crosses Africa, Asia, the Indian Ocean, the Pacific Ocean, North America and the Atlantic Ocean.
The northernmost section of the border between Mauritania and Mali is defined by the parallel.
At this latitude the sun is visible for 13 hours, 42 minutes during the summer solstice and 10 hours, 35 minutes during the winter solstice.
25th parallel north Wikipedia
Starting at the Prime Meridian and heading eastwards, the parallel 25° north passes through: