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Falcon 9 Block 5 | USSF-366

USSF-366 is a classified mission for the United States Space Force. It is possibly a batch of classified LEO satellites for a US government entity based on SpaceX’s Starshield satellite bus, based on locations of rocket stage drop zones being exact fits with previous Starlink Group 15 launches.

T-minus
00Days
:
00Hrs
:
00Min
:
00Sec
Saturday, August 15, 2026
09:52:00 PM UTC02:52 PM PDT local
4h windowAccurate to the minute
Falcon 9 Block 5 | USSF-366
Mission
T-Minus
—±minute
Probability
—weather window
Window
4hlaunch window
Orbit
LEOLow Earth Orbit
Mission Type
Government/Top Secret
Global # This Year
#192orbital attempts
Agency # This Year
#98SpaceX
Vehicle
Launch Vehicle
Falcon 9 Block 5Falcon
Provider
SpaceXCommercial
Success Rate
—
Total Launches
—all-time
Launch Site
Pad
Space Launch Complex 4EVandenberg SFB
Pad Launches
289from this pad
Site Launches
905from Vandenberg SFB
Latitude
34.6320°
Longitude
-120.6110°
Vandenberg SFB Weather
Status
CAUTIONlaunch site · live
Temperature
17.4°C63°F · feels 18.1°C
Wind
8.9 km/h SW6 mph · 230°
Cloud Cover
100%overcast
Visibility
12.9 kmunrestricted
Humidity
91%high
Precipitation
0 mm0% chance
Pressure
997 hPasurface
Daylight
Conditions
DaytimeVandenberg SFB
Sunrise
06:20 AM PDTlocal
Sunset
07:53 PM PDTlocal
Daylight
13h 33mtotal today
Orbital launches this year#192globally
Agency launches this year#98SpaceX
Launches from this pad289Space Launch Complex 4E
Launches from this site905Vandenberg SFB

Mission Data

Launch VehicleFalcon 9 Block 5
Vehicle FamilyFalcon
Launch Provider🇺🇸 SpaceX
Provider TypeCommercial
Mission TypeGovernment/Top Secret
Target OrbitLow Earth Orbit
Launch PadSpace Launch Complex 4E
Location🇺🇸 Vandenberg SFB, CA, USA USA
MapView on Google Maps ↗
Status Note

Current T-0 confirmed by official or reliable sources.

Launch Site Weather

🌡Temperature
17.4°C63°F · feels 18.1°C
💨Wind
8.9 km/h SW6 mph · 230°
🌧Precipitation
0 mm0% chance
💧Humidity
91%
👁Visibility
12.9 km
⬇Pressure
997 hPa
☁Cloud Cover
100%
Daylight · Daytime
Sunrise06:20 AM PDT
Sunset07:53 PM PDT
14h 33m of daylight
Location

Vandenberg SFB, CA, USA

Launch Site

Est. trajectory · LEO
34.6320°N · -120.6110°E

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