The equator does NOT pass through one of these four countries. Which one?
The equator passes south of Chad. It passes through the following countries (with longitude given in each case)
9°21′E Gabon: Passing 5.5 miles south of Ayem, 6.6 miles north of Mayene, Booue
13°56′E Republic of the Congo: Passing through the town of Makoua.
17°46′E Democratic Republic of the Congo: Passing 9 km south of central Butembo
29°43′E Uganda: Passing 32 km south of central Kampala
34°0′E Kenya: Passing 6 km north of central Kisumu
98°12′E Indonesia: The Batu Islands, Sumatra and the Lingga Islands
109°9′E Indonesia: Borneo
119°40′E Indonesia: Sulawesi (Celebes)
127°24′E Indonesia: Kayoa and Halmahera islands
129°20′E Indonesia: Gebe and Kawe islands
91°35′W Ecuador: Isabela Island in the Galápagos Islands
80°6′W Ecuador: Passing 24 km north of central Quito, near Mitad del Mundo
75°32′W Colombia: Passing 4.3 km north of the border with Peru
70°3′W Brazil: Amazonas, Roraima, Pará, Amapá, Pará