A proper noun names something specific. A proper noun is always capitalized.
Names of holiday are always proper nouns and must be capitalized.
Easter
Valentine’s Day
Thanksgiving
Christmas
Labor Day
Halloween
Mother’s Day
Father’s Day
Hanukkah
Veteran’s Day
Capitalize all holidays because they are proper nouns.
It’s your turn. What words in this sentence should be capitalized? We are finished with school by the time memorial day arrives. Did you figure it out? Good for you!