Daylight saving time
Kyiv (Ukraine) observes daylight saving time from the last Sunday of March to the last Sunday of October: UTC+2 in January, UTC+3 in July. Warsaw (Poland) observes daylight saving time from the last Sunday of March to the last Sunday of October: UTC+1 in January, UTC+2 in July.
Best time for a call
If both sides work 9:00–18:00 local time, the shared window is 10:00–18:00 in Kyiv = 09:00–17:00 in Warsaw (8 hours). Put recurring calls in this window and state the time with the city name (for example “14:00 Kyiv time”) to avoid confusion. How to schedule a meeting across time zones.
How to read the chart
The left column is the local time in Kyiv, the other column shows the same moment in Warsaw. “+1 day” means it is already the next calendar day in Warsaw, “−1 day” — still the previous one. Rows outside 9:00–18:00 are dimmed. The converter above works the other way too: press “Swap” to enter a time in Warsaw.