"Следующий день — пятница."

Translation: The next day is Friday.

[N0thingness_]

What's wrong with "Friday is the next day"?

[Duane258217]

what about, "next day is Friday" it really doesn't need "The" in English

[MSR-Ahmedabad]

The next day is "a" Friday marked incorrect.

[Katja484370]

And "Next day is Friday" also. It's a Russian + collateral English training course

[FridayForFreedom]

What about

"The following day"?

IMO it's right, but I'm not a native English speaker.

[Duane258217]

Thanks Jordan, then the translation should be "the next date is Friday"