The year 1961 was rotationally symmetric.
This means that if you turned 1961 upside down (180 degrees), it would still say "1961".
The next time this will occur is in the year 6009.
It only works with the following numbers:
The year 1961 can be read upside down and that won't happen again until 6009
the year reads the same when turned upside down! it will happen again in 6009!
Bluebelle - ship - happened in 1961.
Friendship Nine happened in 1961.
Albany Movement happened in 1961.
Nicaraguan Revolution happened in 1961.
Raw Justice happened in 1961.
Siege of Jadotville happened in 1961-09.
It happened in 1961
Portuguese Colonial War happened in 1961.
Bizerte crisis happened on 1961-07-19.
Holtaheia Accident happened on 1961-08-09.