- Start
- Jul 21, 196990% CONFIDENCEfrom the source · possible Mar 1, 1965 – Jul 21, 1969
- End
- Jul 21, 196985% CONFIDENCEfrom en.wikipedia.org
Buzz Aldrin Wears an Omega Speedmaster on the Moon
- Apollo 11 lifted off from Kennedy Space Center on 16 July 1969 and the lunar module Eagle landed at 20:17:40 UTC on 20 July; Michael Collins stayed in orbit[1][2]
- Armstrong stepped onto the surface at 02:56:15 UTC on 21 July, and about 20 minutes later Buzz Aldrin joined him wearing his official-issue Speedmaster 105.012 strapped over his bulky moon suit[1][2]
- Armstrong left his own Speedmaster 105.012 inside the lunar module as a backup, because the module's electronic timer had malfunctioned, so Aldrin's became the first watch worn on the Moon[3]
- Around 600 million viewers watched Armstrong descend the ladder; the Speedmaster, which NASA had flight-qualified in 1965, became known as the Moonwatch and its caseback now reads 'The First Watch Worn on the Moon'[1][3]
- Aldrin later wrote that wearing it was optional and that few things are less necessary when walking around on the Moon than knowing what time it is in Houston[3]
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References 482% CONFIDENCEOverall confidence: 82%How well the pin's source and references back up its dates.Weighted average of how firmly 4 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better
The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
- [1]90%monochrome-watches.com/the-stuff-of-legend-celebrating-50-years-of-moonwatchs-lunar-landingmonochrome-watches.com· Posted Oct 5, 2026· Starts Jul 21, 1969 ✓· 25% of score
Eagle landed at 20:17:40 UTC on 20 July 1969 (Monochrome); Armstrong stepped off at 02:56:15 UTC on 21 July (Wikipedia[2][3]) and Aldrin joined him about 20 minutes later (Monochrome), so the walk happened on 21 July UTC.
- [2]85%Apollo 11 - Wikipediaen.wikipedia.org· Added Oct 5, 2026· Starts Jul 20, 1969· Ends Jul 21, 1969 ✓· 25% of score
Armstrong stepped off Eagle's landing pad at 02:56:15 and Aldrin joined him on the surface.[1]
- [3]80%Omega Speedmaster - Wikipediaen.wikipedia.org· Added Oct 5, 2026· Starts Jul 21, 1969· 25% of score
Armstrong left his 105.012 in the lunar module as a backup; Aldrin elected to wear his, the first watch worn on the Moon; caseback 'The First Watch Worn on the Moon'.[1]
- [4]72%Celebrating 60 Years of the Omega Speedmaster Becoming NASA Flight Qualified - Fratellofratellowatches.com· Added Oct 5, 2026· Starts Mar 1, 1965· 25% of score
Background on how the Speedmaster became NASA's qualified chronograph four years before the landing.[1]
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