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"Tuesday" is a proper noun which is often translated as "el martes", and "Monday" is a proper noun which is often translated as "el lunes". Learn more about the difference between "Tuesday" and "Monday" below.
Tuesday(
tuz
-
dey
)A proper noun refers to the name of a person, place, or thing.
Monday(
muhn
-
dey
)A proper noun refers to the name of a person, place, or thing.