50th anniversary: The Viking 1 lander became the first spacecraft to successfully land on Mars...
History · Anniversaries · Mon, July 20, 2026
1976: The Viking 1 lander became the first spacecraft to successfully land on Mars and perform its mission.
Also on Jul 20, 2026
| Date | Event | When |
|---|---|---|
| Mon, Jul 20, 2026 | 375th anniversary: Wars of the Three Kingdoms: After crossing the Firth of Forth, English... | 2 mo ago |
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.
Sources: official schedules and published calendars, linked on every event; computed dates name their rule. Refreshed nightly.