Cach dung gioi tu thoi gian AT IN ON

 AT / IN / ON: Time

We use IN with:

• months, e.g., May
• seasons, e.g., (the) summer
• years, e.g., 2050
• times of day, e.g., the morning

We use ON with:

• dates, e.g., April 3rd
• days, e.g., Wednesday, Valentine's Day

We use AT with: 

• time, e.g., 6 o'clock
• EX:
•