The college opens ______ 23rd June.
The college opens ______ 23rd June.
Explanation
"On" is used for specific dates (e.g., "on 23rd June").
"In" is for months/years (e.g., "in June").
"At" is for precise times (e.g., "at 9 AM").
"On" is used for specific dates (e.g., "on 23rd June").
"In" is for months/years (e.g., "in June").
"At" is for precise times (e.g., "at 9 AM").