Business Hours Government office hours are from 9 a.m. to 6 p.m. on weekdays, and on Saturdays they are open at 9 a.m. and close at 1 p.m.(not open on 2nd, 4th Saturdays). Banks are open from 9:30 a.m. to 4:30 p.m. from Monday to Friday. Major department stores are open from 10:30 a.m. to 8:00 p.m. including Sundays, but smaller shops tend to be open from early morning until late evening.   National Holidays Korean holidays are occasions for family gatherings and outings. Many of them are centered on religious or folk festivals. However, some commemorate national events. Although the Gregorian calendar is used for everyday events, the lunar calendar still determines some holidays and religious events.