"Saya pergi ke sekolah di hari Senin."

Translation: I go to school on Mondays.

[joeldipops]

Is "I go to school on Monday" also correct, or does that use a different preposition like "pada"?

[glhaynes90]

My inclination is that "on Monday" would use pada and "Mondays" would use di, but I can't confirm for certain.

[tabris12]

In this sentence, di and pada have same meaning. You can use both, all correct. But pada is more formal