Mission details
| Launched | August 16, 2026 at 01:50 UTC |
|---|---|
| Status | Complete (Success) |
| Rocket | Falcon 9 Block 5 |
| Launch pad | Space Launch Complex 4E, Vandenberg SFB, CA |
| Orbit | Low Earth Orbit |
| Mission type | Government/Top Secret |
| Customer | United States Space Force |
| Booster | B1088, 18th flight (48 days since the last) |
| Landing | Landed: droneship OCISLY |
Times in UTC. Data from Launch Library 2 by The Space Devs, last changed 2026-10-25 19:12 UTC. Launch times move often; check the official page on launch day.
Replay and sources
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FAQ
USSF-366 questions
When did USSF-366 launch?
SpaceX launched USSF-366 on a Falcon 9 from Space Launch Complex 4E, Vandenberg SFB, CA on August 16, 2026 at 01:50 UTC. Launch Library 2 records it as a success.
Which booster flew USSF-366?
Booster B1088 flew for the 18th time, 48 days after its previous flight, and landed on the droneship OCISLY.
Where can I watch USSF-366 again?
The official SpaceX webcast is linked on this page, under Replay and sources.
Answers as of October 25, 2026.