March 10

Calendar position and leap years

The shift from day 69 to day 70 in leap years results from the extra day added in February. That adjustment keeps the calendar synchronized with Earth's orbit. For discussions of the four‑year cycle and exceptions to leap year rules see resources on leap years.

History and notable events

• 1876 — Alexander Graham Bell made the first successful experiment with the telephone, an early and widely cited milestone in telecommunication history.
• 1959 — A major political uprising took place in Lhasa, Tibet, prompting significant changes in the region and the flight of its spiritual leader into exile.
• Other years have seen varied events on this date from political acts to scientific announcements; the specific significance varies by country and era.

Observances and cultural notes

Cultural and informal observances sometimes fall on March 10. Fan communities have adopted playful commemorations (for example, a popular video game character is celebrated on "Mar10"), and local or national commemorations may mark anniversaries of historical figures or events tied to the date. Religious and civic calendars can also place movable feasts or remembrance days near this point in March.

Notable births and deaths

• Births: Several public figures were born on March 10, including entertainers and athletes whose careers later drew international attention.
• Deaths: The date is also the anniversary of the deaths of historically significant individuals; for example, the abolitionist and conductor of the Underground Railroad died on March 10, 1913.

Seasonally, March 10 sits within late winter in the Northern Hemisphere and late summer in the Southern Hemisphere, typically several days to a few weeks before the spring or autumnal equinox. The day’s meaning often depends on local history, observance traditions and the wider seasonal cycle.