What does si (if) hoy es jueves manana mean in English?

This phrase is a bit tricky, as it mixes Spanish and English in a way that's not grammatically correct in either language.

Let's break it down:

* si (if) - This is a Spanish word meaning "if."

* hoy es jueves (today is Thursday) - This is a correct Spanish phrase.

* manana (tomorrow) - This is a Spanish word meaning "tomorrow."

Here's what it probably means:

The speaker is likely trying to say something like:

* "If today is Thursday, then tomorrow is Friday."

However, the phrase as written is grammatically incorrect. It would be better to say:

* "Si hoy es jueves, mañana es viernes." (Spanish)

* "If today is Thursday, tomorrow is Friday." (English)