Central European Time (CET) applies in the Czech Republic.
In the Czech Republic, winter time begins (clocks go back) on the last Sunday in October and ends on the last Saturday in March (CET or Universal Coordinate Time (UTC) + 1) while summer time begins (clocks go forward) on the last Sunday in March and ends on the last Sunday in October (Central European Summer Time (CEST) or UTC + 2).
Time differences between the Czech Republic and selected English-speaking countries:
AFRICAN COUNTRIES: –2 hours to +1 hour ahead of Czech Republic
Abuja: –1 hour
Cape Town & Johannesburg: no difference
Nairobi: +1 hour
AUSTRALIA: +6 hours to +8 hours ahead of Czech Republic
Brisbane & Sydney: +8 hours
Perth:+6 hours
CANADA: –9 hours to –5 hours behind Czech Republic
Toronto: –6 hours
Vancouver: –9 hours
INDIA: +3.5 hours ahead of Czech Republic
NEW ZEALAND: +10 hours or +11 hours ahead of Czech Republic
Auckland & Wellington: +10 hours
PAKISTAN: +3 hours ahead of Czech Republic
UNITED STATES (continental): –9 hours to –6 hours ahead of Czech Republic
Boston, New York & Washington: –6 hours
Los Angeles & San Francisco: –9 hours