... Christmas
At
... dinner
At
... my birthday
On
... autumn
In
... a holiday
On
... December
In
... summer
In
... New Year's Day
On
... Tuesday afternoon
On
... breakfast
At
... the morning
In
... winter
In
... 1999
In
... 10 o’clock
At
... Sunday night
On
... the weekend
At (BR.) / On (Am.)
... next Monday
-
... night
At
... 12 April 1961
On
... lunch
At
... sunny afternoon
On
... every afternoon
-
… lunch-time
At
... this morning
-
... midnight
At
... tonight
-
... every night
-
... 8 July
On
... the afternoon
In
... a rainy day
On
... Wednesday
On
... spring
In
… the 1980s
In
... last summer
-
... half past two
At