sun .5deg.comSunrise, Sunset, Solar noon and Sun position here: Seongnam-si, South Korea (Gyeonggi-do). Longest day in 2026: 14 hours, 44 minutes, 57 seconds (2026-06-21). Shortest day in this year: 9 hours, 34 minutes , 51 seconds (2026-12-22).
)Largest solar noon altitude in Seongnam-si in 2026 is: 76° (2026-06-22, 12:33:25). minimal 29.12° (2026-12-22, 12:29:50)
*All times are shown in Seongnam-si local time.