In,on,at in time

I go to bed _____ 9pm

• In

• On

• At

I go to bed _____ quarter past ten

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• On

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Mexicans celebrate independence day _____ 15th September

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• On

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Christmas is _____ 24th December

• In

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World war ii was _____ 1939

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We are _____ 21th century

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Advent celebration is_____ easter

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We ask for candy_____ halloween

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Adult swim starts_____ midnight

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• On

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I do exercise_____ noon

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• On

• At