the author uses the preposition "on" to describe a date.

1934 Carl Sagan was born.

1966 Sagan was asked to contribute an interview about the possibility of extraterrestrials to a proposed introduction to a film.

1980 He presenting the award-winning television series Cosmos: A Personal Voyage.

1981 He won Annual Award for Television Excellence.

1996 He died.

When I was Primary 6, I sometimes did my homework during the English lessons. One day, my English teacher saw it. She was angry with me. She said all the classmates no need to do their homework but I did 4 times.All the classmate called me 'lord'.

Raining outside
look from inside