Launch week: September 7-13, 2026

Five dated orbital launch records currently fall inside the September 7-13, 2026 UTC calendar: two CASC launches from China, Roscosmos' Progress 96 cargo flight, SpaceX's USSF-153 mission, and SpaceX's O3b mPOWER 11-13 mission. The two Chinese entries have firm-looking times but undisclosed payloads; the other three have usable mission descriptions, with the Progress vehicle variant still reported differently by separate schedule pages. 1 2

All times below are UTC. NET means no earlier than; TBD means the source has not settled or disclosed the field. A status marked "provisional" belongs on a watch list, but it should not be treated as a confirmed mission plan.

Quick schedule

UTC date and time	Mission / vehicle	Launch organisation	Site and pad	Payload and destination	Status and webcast
Sep 9, 09:00 Window 08:52-09:13	Unknown Payload Long March 2D/YZ-3	CASC	Jiuquan Satellite Launch Center, Site 94 (SLS-2)	Orbital launch; payload, customer and destination orbit undisclosed.	Scheduled, payload details highly uncertain. No direct stream listed. 3
Sep 9, 16:15	Progress MS-35 / Progress 96 Soyuz 2.1b in one schedule; Soyuz 2.1a in Spaceflight Now	Roscosmos	Baikonur Cosmodrome, Site 31/6	Uncrewed ISS resupply mission carrying about three tons of food, fuel and supplies to low Earth orbit.	Go for launch. NASA+ launch coverage begins at 16:00 UTC. 4 5
Sep 10, 15:37 Window 15:37-19:37	USSF-153 Falcon 9 Block 5	SpaceX for the U.S. Space Force	Vandenberg Space Force Base, SLC-4E	Classified U.S. Space Force payload to low Earth orbit; customer and satellite count undisclosed.	Go for launch. SpaceX mission page is the official viewing destination. 2 6
Sep 11, 16:00 Window 16:00-20:00	Unknown Payload Long March 8A	CASC	Wenchang Space Launch Site, Commercial LC-1	Orbital launch; payload, customer and destination orbit undisclosed.	Scheduled, mission details uncertain. No direct stream listed. 7
Sep 13, 18:50	O3b mPOWER 11-13 Falcon 9 Block 5	SpaceX for SES	Cape Canaveral Space Force Station, SLC-40	Three high-throughput communications satellites, built by Boeing for SES, joining the O3b mPOWER medium Earth orbit constellation.	To be confirmed. No mission-specific stream link was returned; the schedule page remains the recheck point. 6 8

Mission cards

Long March 2D/YZ-3: Wednesday morning from Jiuquan

CASC's Long March 2D/YZ-3 is listed for 09:00 UTC on September 9, with a 21-minute window from Site 94 at Jiuquan Satellite Launch Center. The Next Spaceflight detail page says the payload and launch-vehicle assignment are both extremely uncertain. The record gives no customer, payload type or destination orbit, so the launch belongs on a provisional calendar alert rather than a mission-specific watch list. 3

No direct webcast was listed in the retrieved mission record. Check the schedule again before the window opens.

Progress MS-35 / Progress 96: the week's clearest public webcast

NASA identifies the spacecraft as Progress 96 and says the unpiloted cargo vehicle will carry about three tons of food, fuel and supplies to the International Space Station. NASA's launch time is 12:15 p.m. EDT on September 9, which converts to 16:15 UTC. NASA plans to begin live coverage at 12:00 p.m. EDT, or 16:00 UTC, through NASA's live platforms. 4

The schedule pages agree on the time, site and low Earth orbit destination but disagree on the vehicle label. Space Launch Schedule lists Soyuz 2.1b, while Spaceflight Now describes the rocket as Soyuz 2.1a and NASA's announcement says only Soyuz. The article keeps the disagreement visible instead of turning one schedule label into an official resolution. 2 5

Progress 96 is scheduled to dock autonomously with the ISS on September 11 at about 18:37 UTC, after a two-day trip. NASA's announcement gives the docking plan and the live-coverage route. 4

USSF-153: Thursday's classified Falcon 9 flight

SpaceX's Falcon 9 Block 5 is scheduled to open its USSF-153 launch window at 15:37 UTC on September 10 from SLC-4E at Vandenberg. Space Launch Now marks the mission "Go for Launch" and describes the payload as a classified U.S. Space Force mission to low Earth orbit. Spaceflight Now gives the same window opening and identifies booster B1081's planned landing on the Of Course I Still Love You droneship. 2 6

The official SpaceX mission page is the direct place to check the webcast and any last-minute window change. The public sources do not identify the spacecraft or satellite count, so the payload field remains classified rather than speculative. 9

Long March 8A: Friday's four-hour window

The Long March 8A entry opens its window at 16:00 UTC on September 11 from Commercial LC-1 at Wenchang. The mission detail gives a four-hour window through 20:00 UTC, but it labels both the payload and the vehicle assignment as uncertain. The customer, mission type beyond an orbital launch, and destination orbit remain undisclosed. 7

No mission-specific webcast was listed. A payload announcement or a time change could materially change the value of this calendar entry, so recheck the record on launch day.

O3b mPOWER 11-13: the final three satellites for SES

SpaceX's schedule places the Falcon 9 launch at 18:50 UTC on September 13 from SLC-40 at Cape Canaveral. Space Launch Now marks the date "To Be Confirmed" and describes three communications satellites headed for medium Earth orbit. SES says the final three spacecraft had arrived at Cape Canaveral for a September Falcon 9 launch and would complete the initial 13-satellite O3b mPOWER constellation. Boeing identifies the spacecraft as F11, F12 and F13 and says SES will operate the network. 6 8 10

The three spacecraft will join 10 O3b mPOWER satellites already operating in MEO. No mission-specific webcast URL was returned in the sources checked for this issue. Treat 18:50 UTC as a watch target and confirm the final time on the SpaceX or SES channels before setting an alarm. 8

Watch priorities

September 9, 16:15 UTC: Progress 96. NASA has published a direct live-coverage route beginning 15 minutes before liftoff. The mission has a defined cargo destination and a precise launch time. 4
September 10, 15:37 UTC: USSF-153. The public payload is classified, but the launch time, pad and official SpaceX mission page are available. 9
September 13, 18:50 UTC: O3b mPOWER 11-13. The mission completes SES's initial 13-satellite MEO constellation, but the schedule is still marked to be confirmed and no direct stream link was returned. 6 8
September 9, 09:00 UTC and September 11, 16:00 UTC: the two Chinese entries. Both have dated windows and identified pads, while payload, customer and orbit details remain undisclosed. Keep the alerts provisional and check for a new notice before watching. 3 7

Coverage notes

The five entries above are the dated records found inside the September 7-13 UTC window. The current Next Spaceflight list also shows the next Arianespace/Avio Vega-C mission on September 15, outside this week's Monday-Sunday range. Spaceflight Now likewise places Sentinel-3C and FLEX on September 14/15, so that ESA-related mission stays out of this issue. 1 2

NASA's launch schedule currently shows JAXA HTV-X2 as NET September 2026 without a date inside this week, while its Progress 96 release supplies the dated Roscosmos cargo launch included above. 4 11

Rocket Lab's current launches page returned an undated "Aspera mission for NASA" entry rather than a dated launch in this window. The current Next Spaceflight list shows Rocket Lab's next visible entries only as NET third-quarter missions. No Rocket Lab launch therefore meets the week's dated-entry threshold. 1 12

The retrieved Blue Origin missions page was stopped at a browser-verification screen. A dated Blue Origin launch could not be confirmed from that first-party page, and the current Next Spaceflight list supplied no dated Blue Origin candidate. This issue leaves Blue Origin out of the schedule rather than treating the blocked page as proof that no mission exists. 1 13

ISRO's launch-missions table records GSLV-F17/EOS-05 on September 4, before this issue's window, and shows no dated ISRO launch from September 7 through 13. 14

Launch windows and webcasts can change after publication. Recheck the linked operator or agency page before setting an alarm, especially for the two Chinese records and O3b mPOWER 11-13.