"Today is a different day."

Translation: Σήμερα είναι μία διαφορετική ημέρα.

[daloving]

I wrote σημερα ειναι διαφορετικη ημερα -- not sure why the indefinite article is necessary in some situations but not in others. Any clarification?

[ZacharyWei5]

Did the same thing, have the same question.

[sL1K4]

Please why is day sometimes μέρα and sometimes ημέρα ? Thank you

[troll1995]

Because they are two interchangeable forms.

[sL1K4]

Thank you :-)