Learn Farsi: پنجشنبه در خانه هستیم.

In Farsi, you don't need a preposition like "on" before days of the week. You simply state the day, so پنجشنبه by itself translates to "on Thursday" in this context.

Where is the word for "we" in this sentence?

In Farsi, you can usually drop the subject pronouns (like ما for "we") because the verb ending already tells you who is doing the action. The ending ـیم on the verb هستیم specifically means "we are".

Does the word در mean "in" or "at"?

It means both! Farsi uses در to show location, whether English would use "in" or "at". So در خانه can translate to "in the house" or "at home" depending on what sounds most natural in English.

Why is the verb هستیم (we are) at the very end of the sentence?

Farsi sentence structure generally puts the verb at the very end. The time (پنجشنبه) and the location (در خانه) come before the verb, unlike in English where the verb usually comes right after the subject.