Falcon 9 Block 5 | USSF-366

Launch by SpaceX. 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. From Vandenberg SFB, CA, USA.
04
04
days
19
19
hours
58
58
min
40
40
sec
Advertisement

Countdown Timer - Falcon 9 Block 5 | USSF-366

Get ready for an exhilarating experience as we approach the launch of SpaceX's Falcon 9 Block 5 for the USSF-366 mission on Saturday, August 15, 2026! This highly classified mission for the United States Space Force is shrouded in secrecy, potentially deploying a batch of advanced LEO satellites utilizing SpaceX’s innovative Starshield satellite bus. Our countdown timer is ticking down to this pivotal moment at Vandenberg Space Force Base in California, where cutting-edge technology meets the vastness of space. Join us as we track every second leading up to this monumental launch, bringing you all the latest updates and insights. Don’t miss out on the chance to witness history in the making—mark your calendars and stay tuned for the countdown!

Frequently Asked Questions

There are exactly 5 days left until Falcon 9 Block 5 | USSF-366, which is 116 hours or 6959 minutes.

Falcon 9 Block 5 | USSF-366 will take place on Saturday, August 15, 2026 at 09:52 PM.

Use our real-time countdown to precisely track the time remaining until Falcon 9 Block 5 | USSF-366.

Related countdowns

See more space
Space
35

Juice Earth Flyby

Third flyby of ESA's Jupiter Icy Moons Explorer (Juice) mission on its way to the Jovian system. Location: Earth.

49
d
22
h
06
m
40
s
9/30/2026View →
Space
24

Solar Orbiter Venus Flyby

Solar Orbiter, a partnership between ESA and NASA, will perform a gravity assist maneuver with Venus on December 24, 2026. Throughout its mission it also makes repeated gravity assist flybys of Venus to get closer to the Sun, and to change its orbital inclination, boosting it out of the ecliptic plane, to get the best – and first – views of the Sun’s poles. Location: Venus.

134
d
22
h
06
m
40
s
12/24/2026View →
Space
21

Europa Clipper Earth Flyby

NASA’s Europa Clipper will fly by Earth for a second and final gravity assist on its way to Jupiter. Location: Earth.

141
d
22
h
06
m
40
s
12/31/2026View →
Space
18

SNC-1 Dream Chaser Landing

The Sierra Nevada Corporation SNC-1 Dream Chaser will land autonomously at the Launch and Landing Facility of Kennedy Space Center. Location: Kennedy Space Center, FL, USA.

142
d
00
h
06
m
40
s
12/31/2026View →
Space
11

Total Solar Eclipse in Europe

On 12 August 2026, a solar eclipse will be visible across parts of Europe and the north Atlantic. The path of totality will cross Greenland, Iceland, Spain and a small area of northeastern Portugal. Other parts of Europe will see a partial solar eclipse. Location: Europe & Northern Atlantic.

1
d
13
h
42
m
03
s
8/12/2026View →
Space
9

BepiColombo Mercury Orbit Insertion

Orbital insertion around Mercury of the ESA-JAXA BepiColombo mission. Location: Mercury.

110
d
22
h
06
m
40
s
11/30/2026View →