Why does the Torah use the double expression "Negbah Teimanah"?
Which in turn, is based on the fact that the sun, after rising in the east, travels to the west via the south.
In fact, the Ramban points out, all the directions have names that are linked to the sun when man faces it). Hence, the Torah will refer to the east as "Keidmah Mizrachah" (Shemos 27:13 [See Rashi there]), seeing as 'Kedem' means in front, and the west as "Yam" (in Shemos 26:22), because in Eretz Yisrael, the Mediterranean Sea is in the west. Whereas the north the Torah refers to as "Tzafon" (in Shemos 26:20), because the sun is hidden from it (since it never appears there). The Ramban adds that the Torah refers to the south as "Darom" (as if it had written ''Dar Ram" (dwells on high) because that is where the sun reaches its highest point. Moreover, it refers to the south as 'the right, and the north as 'the left', from the point of view of a man facing the sun.