Preposition of Time

• Use at with specific times: at 5:00/at 7:30/at noon/at midnight 

• Use from and to with a span of time: from 6:00 to 9:00/from 1941 to 1945

• Use in with other parts of the day: in the afternoon/ in the morning/in the evening (exception: at night)

• Use in with months: in August/in June

• Use in with years: in 19999/in 2001

• Use in with seasons: in the spring/in the summer/in the winter

• Use on with days of the week: on Sunday/on Tuesday/ on Friday

• Use on with specific dates: on June 30 on April 21, 2001/on New Year's Eve

 (Doddy, Ahmad, Ahmad Sugeng, And Effendi. 2008. Developing English Competencies. Jakarta: Pusat Perbukuan, Departemen Pendidikan Nasional)