Variable KOREAN_CONFIGConst

Korean calendar configuration (UTC+8:30/9, epoch 2333 BCE — Dangun era)

Uses the Dangun (단군기원) epoch starting from 2333 BCE. This means Korean cycle/year values differ from Chinese for the same Gregorian date.

Korea's timezone history is complex:

• Before 1908: Seoul local solar time (UTC+8:27:52)
• 1908-1911: UTC+8:30
• 1912-1954: UTC+9 (Japanese colonial period)
• 1954-1961: UTC+8:30
• 1961+: UTC+9