On This Day in History - May 1
| Discover today's historical events and the facts. Listed here the time line of events that happened on this day in history
| Click on the date from the below calendar to know the historical events happened on that particular day.
|What Happened On This Day In History - May 1
1930 May 1
The planet Pluto is officially named. It had been discovered a few months earlier by astronomer Clyde Tombaugh at the Lowell Observatory in Arizona, USA.
1978 May 1
The first spam e-mail in history is circulated in the internet's predecessor, the ARPANET.