OBA Practice Questions - 29a Olimpíada Brasileira De Astronomia E Astronáutica - 2026 Exam

Twice per year, once in late spring and once in late summer Once per year, precisely at the December summer solstice Four times per year, during the equinoxes and cross-quarter days Zero times per year, because São Paulo lies south of the Tropic of Capricorn (23°26' S)