Prepositions of time

• 1. on 6 June
• 2. in the evening
• 3. at half past two
• 4. on Wednesday
• 5. in 1987
• 6. in September
• 7. on 24 September
• 8. on Thursday
• 9. at 11.45
• 10. on Christmas Day
• 11. at Christmas
• 12. in the morning
• 13. on Friday morning
• 14. on Saturday night
• 15. at night
• 16. at the end of the day
• 17. at the weekend
• 18. in winter
• 19. at 8 o'clock
• 20. in the 20th century