No. The nadir is the point on the bottom of the sky directly under your feet.
One arc second is one 3600th of a degree.
If you are talking about angles, a second is one sixtieth of a minute. A minute is one sixtieth of a degree. Soooo, a second is one 3600th of a degree (60 times 60)
The word second is in English already. It means either in position 2 or a unit of time or an angular division equivalent to one 3600th of a degree.
3600th
Latitude and longitude are angles. There is no smallest unit. If you move one inch north of where you are right now, you've changed your latitude about 0.00000023 degree, or about 0.000004 milliradian.
Nadir Khayat
Nadir was Erik's friend from Persia.
nadar
Nadir Nadirov was born in 1932.
Nadir Lamyaghri was born in 1976.
Nadir D'Priest was born in 1961.
Nadir Benoufella was born in 1987.