Przyimki: on, in, for, at

The first landing atforinon the moon was atforinon 1969.
My grandparents were married atforinon more than fifty years.
When I was atforinon Berlin last year, the weather was very cold.
How many people were there atforinon the party?
Where were you atforinon Saturday evening?
It was a beautiful day atforinon August.
My family and I were atforinon holiday atforinon the seaside.
Disco music was very popular atforinon the nineteen-seventies.
My brother graduated last year. He was atforinon Glasgow University.
When I was atforinon school, my parents often helped me with my homework.
I worked atforinon a cinema for a big computer company atforinon the nineties.