Don't forget to use... in + month or year- In March, In 2003 on + date (with the year or without it) or day of the week- On April 2, On March 3, 1999, On Saturday at + clock time, midnight, noon- At 3:30 p.m., At 4:01, At noon Remember also... in + season- In the summer, In the winter in + morning, afternoon, evening- In the morning, In the evening at + night- At night