Standard Time in Korea is 9 hours ahead of Greenwich Mean Time (GMT +9)
The unit of Korean currency is Won. Korean monetary units are KRW10, KRW50, KRW100, and KRW500 coins, and KRW1,000, KRW5,000, KRW10,000 and KRW50,000 notes
Tipping is not a traditional Korean custom. Service charges are added to the bill but tipping is not expected. It is also not necessary to tip a taxi driver unless extra services are provided.
The standard electricity supply is 220-volts AC at 60Hz.
T-money is a transportation card as well as a device used to pay for taxi fares and, in some cases, transactions at convenience stores. T-money card is rechargeable at any of the T-money vendors or Ticket Vending and Card Reload Devices inside most subway stations.