1940s
1940s ke dassak (decade) 1 January 1940 se suruu bhais rahaa aur 31 December 1949 ke khalaas bhais rahaa. Ii 20th century ke 5th decade rahaa.
Ii dassak ke suruwaat me dunia bhar me World War II chalat rahaa aur aur iske hoe talak Cold War suruu hoe gais rahaa.