Week in Space Data, every Friday.
On-Time Launch Report · quarterly
27 launches flew from August 29, 2026 to the end of Q3 2026. Of the 26 with a firm date on record before liftoff, 88% flew within a day of their first firm date and 96% within a week; the median delay was 0 days. 7 real slips were recorded in the quarter.
Live preview, not yet published. These figures are recomputed from the ledger as it stands on September 26, 2026 and will change until the edition freezes. The report freezes on October 5, 2026.
| Provider | Flew | Scored | Within 1 day | Within 7 days | Average delay | Median delay |
|---|---|---|---|---|---|---|
| SpaceX | 8 | 8 | 100% | 100% | 0 d | 0 d |
| China Aerospace Science and Technology Corporation | 5 | 5 | 80% | 80% | +2.6 d | 0 d |
| Vehicle | Flew | Scored | Within 1 day | Within 7 days | Average delay | Median delay |
|---|---|---|---|---|---|---|
| Falcon 9 Block 5 | 7 | 7 | 100% | 100% | 0 d | 0 d |
| Electron | 4 | 4 | 75% | 100% | +0.5 d | 0 d |
| Falcon Heavy |
| Launch site | Flew | Scored | Within 1 day | Within 7 days | Average delay | Median delay |
|---|---|---|---|---|---|---|
| Vandenberg SFB, CA, USA | 6 | 6 | 100% | 100% | 0 d | 0 d |
| Jiuquan Satellite Launch Center, People's Republic of China | 5 | 5 | 100% | 100% | +0.2 d | 0 d |
| Flew | Mission | Provider | First firm date | Delay | Slips |
|---|---|---|---|---|---|
| Aug 30 | Falcon Heavy | Nancy Grace Roman Space Telescope | SpaceX | Aug 30, 2026never moved while we watched | 0 d | 0 |
| Sep 1 | Pallas-1 | Demo Flight | Galactic Energy | Sep 1, 2026never moved while we watched | 0 d | 0 |
Method v1.0: how moves are classified and launches scored. Data: Launch Library 2 (The Space Devs) manifest, observed and recorded by SpaceNexus since August 29, 2026. Licence CC BY 4.0: cite “SpaceNexus Launch Ledger”. No sponsor sees or shapes this ledger (policy).
| Rocket Lab | 4 | 4 | 75% | 100% | +0.5 d | 0 d |
|---|
| Avio S.p.A | 1 | 1 | too few (1) | too few (1) | 0 d | 0 d |
|---|
| CAS Space | 1 | 1 | too few (1) | too few (1) | 0 d | 0 d |
|---|
| ExPace | 1 | 1 | too few (1) | too few (1) | 0 d | 0 d |
|---|
| Galactic Energy | 1 | 1 | too few (1) | too few (1) | 0 d | 0 d |
|---|
| Indian Space Research Organization | 1 | 1 | too few (1) | too few (1) | 0 d | 0 d |
|---|
| Isar Aerospace | 1 | 1 | too few (1) | too few (1) | +1 d | +1 d |
|---|
| LandSpace | 1 | 1 | too few (1) | too few (1) | 0 d | 0 d |
|---|
| Orienspace Technology | 1 | 1 | too few (1) | too few (1) | 0 d | 0 d |
|---|
| Russian Federal Space Agency (ROSCOSMOS) | 1 | 1 | too few (1) | too few (1) | +6.9 d | +6.9 d |
|---|
| Russian Space Forces | 1 | 0 | none scored | none scored | n/a | n/a |
|---|
Shares are shown once a group has 3 or more scored launches. Delay is liftoff minus the first firm date on record; negative means it flew early.
| 1 |
| 1 |
| too few (1) |
| too few (1) |
| 0 d |
| 0 d |
| Gravity-1 | 1 | 1 | too few (1) | too few (1) | 0 d | 0 d |
|---|
| GSLV Mk. II | 1 | 1 | too few (1) | too few (1) | 0 d | 0 d |
|---|
| Kinetica 1 | 1 | 1 | too few (1) | too few (1) | 0 d | 0 d |
|---|
| Kuaizhou 11 | 1 | 1 | too few (1) | too few (1) | 0 d | 0 d |
|---|
| Long March 12 | 1 | 1 | too few (1) | too few (1) | 0 d | 0 d |
|---|
| Long March 2D | 1 | 1 | too few (1) | too few (1) | 0 d | 0 d |
|---|
| Long March 4B | 1 | 1 | too few (1) | too few (1) | +1 d | +1 d |
|---|
| Long March 6A | 1 | 1 | too few (1) | too few (1) | 0 d | 0 d |
|---|
| Long March 8A | 1 | 1 | too few (1) | too few (1) | +11.9 d | +11.9 d |
|---|
| Pallas-1 | 1 | 1 | too few (1) | too few (1) | 0 d | 0 d |
|---|
| Soyuz 2.1b | 1 | 1 | too few (1) | too few (1) | +6.9 d | +6.9 d |
|---|
| Soyuz 2.1b Fregat-M | 1 | 0 | none scored | none scored | n/a | n/a |
|---|
| Spectrum | 1 | 1 | too few (1) | too few (1) | +1 d | +1 d |
|---|
| Vega-C | 1 | 1 | too few (1) | too few (1) | 0 d | 0 d |
|---|
| Zhuque-2E Block 2 | 1 | 1 | too few (1) | too few (1) | 0 d | 0 d |
|---|
Shares are shown once a group has 3 or more scored launches. Delay is liftoff minus the first firm date on record; negative means it flew early.
| Rocket Lab Launch Complex 1, Mahia Peninsula, New Zealand | 4 | 4 | 75% | 100% | +0.5 d | 0 d |
|---|
| Taiyuan Satellite Launch Center, People's Republic of China | 2 | 2 | too few (2) | too few (2) | 0 d | 0 d |
|---|
| Wenchang Space Launch Site, People's Republic of China | 2 | 2 | too few (2) | too few (2) | +6 d | +6 d |
|---|
| Andøya Spaceport | 1 | 1 | too few (1) | too few (1) | +1 d | +1 d |
|---|
| Baikonur Cosmodrome, Republic of Kazakhstan | 1 | 1 | too few (1) | too few (1) | +6.9 d | +6.9 d |
|---|
| Cape Canaveral SFS, FL, USA | 1 | 1 | too few (1) | too few (1) | 0 d | 0 d |
|---|
| Guiana Space Centre, French Guiana | 1 | 1 | too few (1) | too few (1) | 0 d | 0 d |
|---|
| Haiyang Oriental Spaceport | 1 | 1 | too few (1) | too few (1) | 0 d | 0 d |
|---|
| Kennedy Space Center, FL, USA | 1 | 1 | too few (1) | too few (1) | 0 d | 0 d |
|---|
| Plesetsk Cosmodrome, Russian Federation | 1 | 0 | none scored | none scored | n/a | n/a |
|---|
| Satish Dhawan Space Centre, India | 1 | 1 | too few (1) | too few (1) | 0 d | 0 d |
|---|
Shares are shown once a group has 3 or more scored launches. Delay is liftoff minus the first firm date on record; negative means it flew early.
| Sep 2 |
| Falcon 9 Block 5 | Starlink Group 15-23 |
|---|
| SpaceX |
| Sep 2, 2026date on record when we started watching |
| 0 d |
| 0 |
| Sep 2 | Electron | Owl Around The World (StriX Launch 11) | Rocket Lab | Aug 31, 2026date on record when we started watching | +2 d | 0 |
|---|
| Sep 3 | GSLV Mk II | GISAT-1A (EOS-05) | Indian Space Research Organization | Sep 3, 2026never moved while we watched | 0 d | 0 |
|---|
| Sep 5 | Spectrum | Onward and Upward | Isar Aerospace | Sep 4, 2026date on record when we started watching | +1 d | 1 |
|---|
| Sep 6 | Falcon 9 Block 5 | Starlink Group 15-24 | SpaceX | Sep 6, 2026date on record when we started watching | +0.1 d | 0 |
|---|
| Sep 10 | Long March 4B | Yaogan 53-01 to 03/56-01 to 03 | China Aerospace Science and Technology Corporation | Sep 9, 2026date on record when we started watching | +1 d | 1 |
|---|
| Sep 10 | Falcon 9 Block 5 | USSF-153 | SpaceX | Sep 10, 2026date on record when we started watching | 0 d | 0 |
|---|
| Sep 11 | Electron | Happily Ever Faster (BlackSky Gen-3 5) | Rocket Lab | Sep 11, 2026never moved while we watched | 0 d | 0 |
|---|
| Sep 13 | Falcon 9 Block 5 | O3b mPower 11-13 | SpaceX | Sep 13, 2026first firm date it was given | 0 d | 0 |
|---|
| Sep 15 | Vega-C | Sentinel-3C & FLEX | Avio S.p.A | Sep 15, 2026never moved while we watched | 0 d | 0 |
|---|
| Sep 15 | Zhuque-2E Block 2 | SpaceSail Polar Group #15 | LandSpace | Sep 15, 2026never moved while we watched | 0 d | 0 |
|---|
| Sep 15 | Gravity-1 | SpaceSail Polar Group #16 | Orienspace Technology | Sep 15, 2026never moved while we watched | 0 d | 0 |
|---|
| Sep 16 | Soyuz 2.1b | Progress MS-35 (96P) | Russian Federal Space Agency (ROSCOSMOS) | Sep 9, 2026date on record when we started watching | +6.9 d | 1 |
|---|
| Sep 17 | Long March 12 | SatNet LEO Group 25 | China Aerospace Science and Technology Corporation | Sep 17, 2026date on record when we started watching | 0 d | 0 |
|---|
| Sep 17 | Falcon 9 Block 5 | USSF-259 | SpaceX | Sep 16, 2026date on record when we started watching | +1 d | 0 |
|---|
| Sep 17 | Kuaizhou 11 | SpaceTY-51 & 52 | ExPace | Sep 17, 2026never moved while we watched | 0 d | 0 |
|---|
| Sep 17 | Soyuz 2.1b/Fregat | Glonass-K1 No. 20 (?) | Russian Space Forces | Not scored: No firm date was on record before it flew: it went from a placeholder period straight to liftoff. | n/a | 0 |
|---|
| Sep 19 | Electron | Owl By The Dozen (StriX Launch 12) | Rocket Lab | Sep 19, 2026first firm date it was given | 0 d | 0 |
|---|
| Sep 19 | Long March 2D | PIESAT-2 13-16 | China Aerospace Science and Technology Corporation | Sep 19, 2026never moved while we watched | 0 d | 0 |
|---|
| Sep 20 | Falcon 9 Block 5 | Starlink Group 15-27 | SpaceX | Sep 20, 2026never moved while we watched | 0 d | 0 |
|---|
| Sep 20 | Kinetica 1 | 9 satellites | CAS Space | Sep 20, 2026never moved while we watched | 0 d | 0 |
|---|
| Sep 23 | Long March 8A | SatNet LEO Group 26 | China Aerospace Science and Technology Corporation | Sep 11, 2026date on record when we started watching | +11.9 d | 0 |
|---|
| Sep 24 | Long March 6A | Yaogan 40 Group 04 | China Aerospace Science and Technology Corporation | Sep 24, 2026never moved while we watched | 0 d | 0 |
|---|
| Sep 26 | Electron | Owlright, Owlright, Owlright (StriX Launch 13) | Rocket Lab | Sep 26, 2026first firm date it was given | 0 d | 0 |
|---|
| Sep 26 | Falcon 9 Block 5 | USSF-385 | SpaceX | Sep 27, 2026date on record when we started watching | -0.9 d | 0 |
|---|