Everything on the calendar

31,574 dates · 13 categories

History · Anniversaries

50th anniversary: The Viking 1 lander became the first spacecraft to successfully land on Mars...

Mon, July 20, 2026

4 mo ago

Source

In 1976, The Viking 1 lander became the first spacecraft to successfully land on Mars and perform its mission.

Also on Jul 20, 2026

Source, method and history
Source
Wikipedia
How we know
Wikipedia "On this day" selected anniversary, 50 years (1976 to 2026).
Recurs
annual
Feed
Subscribe to Anniversaries
Changes
None recorded.