Common Differences Between Through and To

Through is commonly used in American English to mean ‘up to and including’ a particular point of time.

• The park is open from May through October. (= The park will be open in May, June, July, August, September and October.)
• Our offices are open from Monday through Friday.

In British English, through is not used in this way. Instead, British people use to…inclusive or until the end of…

• The park is open from May to October inclusive.
• The park is open from May until the end of October.

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