Mar 31, 2025 · Historical events for the 31st of March. See what famous, interesting and notable events happened throughout history on March 31.

March 31 is the 90th day of the year (91st in leap years) in the Gregorian calendar; 275 days remain until the end of the year.

We have 24 holidays listed for March 31. March 31st is the 90th day in the Gregorian calendar; it marks the anniversary of the official opening of the Eiffel Tower and the first time Daylight Saving Time goes into effect in the United States.

Mar 31, 2025 · What happened on this day in history, March 31. See what historical events occurred, which famous people were born and who died on March 31.

Discover what happened on March 31 with HISTORY’s summaries of major events, anniversaries, famous births and notable deaths.

On This Day In History - March 31: anniversaries, birthdays, major events, and time capsules. This day's facts in the arts, politics, and sciences.

The Mach number (M or Ma), often only Mach, (/ m ɑː k /; German:) is a dimensionless quantity in fluid dynamics representing the ratio of flow velocity past a boundary to the local speed of sound. [1] [2] It is named after the Austrian physicist and philosopher Ernst Mach. =, …

Today in history – which major historical events happened on March 31? Who was born on this date, who died? In which year did the birth or death occur?

Jul 7, 2024 · The cutting-edge technology of Chang’e-6 has been unveiled, showcasing a 90-degree turn at Mach 31 speed at the edge of the atmosphere, demonstrating extraordinary space maneuvers. Ouyang Ziyuan, known as the “Father of Chang’e,” once said, “Whoever controls outer space controls the Earth.”

Jul 1, 2024 · Chang'e-6 returned with lunar soil on the far side of the moon at an astonishing Mach 31. The United States and the West were shocked! It can be said that the success of Chang'e-6 is no less than the successful explosion of China's first atomic bomb!