I assume you're not a native English speaker. No native English speaker would ever say "on 1980". "On <specific date, e.g. 'July 20, 1980'>," sure, but if you're just giving the year it's always "in".
Christina Aguilera was born on December 18, 1980
Unwoman was born in 1980.
Aslyn was born in 1980.
Ghostshrimp was born in 1980.
Pau Gasol was born on July 6, 1980
Chelsea Clinton was born on February 27, 1980
Christina Aguilera was born on December 18, 1980
"It doesn't make a particle of difference to me." "The microscope could easily examine a single particle of dust."
Robert Cheeke was born on 1980-03-02.
If you were January 26th, 1980, how old are you?If you were born January 26th, 1980, you are 30 years old.
filter paper
He was born in 1980.
Will Benoit was born in 1980.
Indrajith was born in 1980.
M.I was born in 1980.
Pilipili was born in 1980.
Deesha was born in 1980.