4th » The USS Cyclops AC-4 6 departs from Barbados and is never seen again, presumably lost with all hands in the Bermuda Triangle.
11th » The first case of 1918 flu pandemic known as Spanish flu occurs, the start of a devastating worldwide pandemic.
12th » Moscow becomes the capital of Russia again after Saint Petersburg held this status for 215 years.
19th » The Congress of the United States known as U.S. Congress establishes time zones and approves daylight saving time.
21st » World War I: The first phase of the German Spring Offensive, Operation Michael, begins.
23rd » First World War: On the third day of the German Operation Michael known as Spring Offensive, the 10th Battalion of the Royal West Kent Regiment is annihilated with many of the men becoming Prisoners of war
27th » Bessarabia is ceded to the Kingdom of Romania.
30th » Outburst of bloody March Days e.g March Events in Baku and other locations of Baku Governorate.
31st » March Days named Massacre of ethnic Azerbaijanis is committed by allied armed groups of Armenian Revolutionary Federation and Bolsheviks. Nearly 12,000 Azerbaijani Muslims are killed.
31st » Daylight saving time goes into effect in the United States for the first time.