Moscow is 1 hour ahead of Kyiv. Kyiv uses Eastern European Time (EET/EEST, UTC+2/+3) while Moscow uses Moscow Standard Time (MSK, UTC+3). During standard time, Moscow is 1 hour ahead; during daylight saving time, both cities are the same.
Ukraine observes daylight saving time, while Russia does not, so the difference varies seasonally.
Best calling time: 8:00 AM - 5:00 PM Kyiv time. This corresponds to approximately 9:00 AM - 6:00 PM in Moscow during standard time.
Kyiv (also spelled Kiev) is the capital of Ukraine, while Moscow is the capital of Russia. Both are major Eastern European cities with historical connections.