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Author Topic: SpaceX F9 : Starlink group 6-99 : KSC LC-39A : 17 December 2025 (13:42 UTC)  (Read 5696 times)

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SpaceX F9 : Starlink group 6-99 : KSC LC-39A : 17 December 2025 (13:42 UTC)
« on: 12/05/2025 06:04 pm »
Thread for the Starlink Group 6-99 launch.

Launch 17 December 2025, at 13:42:10 UTC (8:42 am EST), from KSC LC-39A, on booster 1094-6. The first stage successfully landed aboard Just Read The Instructions.

Payload 29 Starlink V2.0 Mini satellites, to a 42.99 degrees inclination orbit on a southeastern trajectory.  Initial orbit 263 x 274 km.

Please use the Starlink Discussion Thread for all general discussion on Starlink.

Check the Starlink Index Thread for links to more Starlink information.


L2 SpaceX: https://forum.nasaspaceflight.com/index.php?board=60.0
« Last Edit: 12/17/2025 04:02 pm by zubenelgenubi »
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Re: SpaceX F9 : Starlink group 6-99 : KSC LC-39A : 14 December 2025 (13:37 UTC)
« Reply #1 on: 12/05/2025 06:11 pm »
https://www.spacex.com/launches/sl-6-99

Quote
SpaceX’s Falcon 9 is targeting the launch of 29 Starlink satellites to low-Earth orbit from Launch Complex 39A (LC-39A) at NASA's Kennedy Space Center in Florida.

A live webcast of this mission will begin about five minutes prior to liftoff, which you can watch here and on X @SpaceX. You can also watch the webcast on the X TV app.

This will be the sixth flight for the first stage booster supporting this mission, which previously launched Ax-4, Crew-11, Cygnus NG-23, and two Starlink missions. Following stage separation, the first stage will land on the Just Read the Instructions droneship, which will be stationed in the Atlantic Ocean.
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Offline zubenelgenubi

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Re: SpaceX F9 : Starlink group 6-99 : KSC LC-39A : 15 December 2025 (13:11 UTC)
« Reply #2 on: 12/12/2025 05:38 pm »
https://celestrak.org/NORAD/elements/supplemental/
Supplemental GP Element Sets
Current as of 2025 Dec 12 18:17:31 UTC (Day 346)
Quote
Starlink G6-99 Pre-Launch   
Derived from a pre-launch Starlink-G6-99 state vector, provided by SpaceX. SupGP data is provided for the entire stack, as well as one for a single satellite.

Launch: 2025-12-15 13:11:00 UTC.
Deploy: 2025-12-15 14:16:11.400 UTC.
Launch window: 2025-12-15 13:11:00 UTC to 2025-12-15 17:11:00 UTC.

https://celestrak.org/NORAD/elements/supplemental/table.php?FILE=starlink-g6-99&FORMAT=tle
Pre-Launch Derived Orbit:
263 km x 274 km x 42.99 deg
« Last Edit: 12/12/2025 05:40 pm by zubenelgenubi »
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Re: SpaceX F9 : Starlink group 6-99 : KSC LC-39A : 15 December 2025 (13:11 UTC)
« Reply #3 on: 12/13/2025 09:52 pm »
Weather (ground winds) at 40% GO at start of window and 80% towards the end:
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Offline Steven Pietrobon

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Re: SpaceX F9 : Starlink group 6-99 : KSC LC-39A : 15 December 2025 (13:11 UTC)
« Reply #4 on: 12/14/2025 09:24 am »
PDF of online press kit.
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Re: SpaceX F9 : Starlink group 6-99 : KSC LC-39A : 15 December 2025 (13:11 UTC)
« Reply #5 on: 12/14/2025 02:39 pm »
Here is a consolidated post of available video links for this launch:

SpaceX's direct live broadcast on
Website: https://www.spacex.com/launches/sl-6-99
 Twitter:  https://x.com/i/broadcasts/1kvJpMElqrLxE

NSF Live Coverage:  https://youtube.com/watch?v=JD05O8b1kKM

SpaceX Re-broadcast alternatives on YouTube:
Space Affairs:  https://youtube.com/watch?v=JD05O8b1kKM

Replay supplied by The Space Devs (15 min after the broadcast end):  https://youtube.com/@thespacedevs/videos

Summary Video provided by SciNews (15 min after the broadcast ends):  https://youtube.com/@SciNewsRo/videos

Post Launch Extras:

CelesTrak has ephemeris-based SupGP data: https://celestrak.org/NORAD/elements/supplemental/
Max-Qproductions by Pete Carstens: https://www.youtube.com/@maxqproductions1
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Re: SpaceX F9 : Starlink group 6-99 : KSC LC-39A : 15 December 2025 (13:27 UTC)
« Reply #6 on: 12/14/2025 08:20 pm »
https://celestrak.org/NORAD/elements/supplemental/
Supplemental GP Element Sets
Current as of 2025 Dec 14 21:17:10 UTC (Day 348)
Quote
Starlink G6-99 Pre-Launch   
Derived from a pre-launch Starlink-G6-99 state vector, provided by SpaceX. SupGP data is provided for the entire stack, as well as one for a single satellite.

Launch: 2025-12-15 13:27:30 UTC.
Deploy: 2025-12-15 14:32:41.400 UTC.
Launch window: 2025-12-15 13:27:30 UTC to 2025-12-15 13:27:59 UTC.

Backup Launch Opportunity #1   
Launch: 2025-12-15 13:28:00 UTC.
Deploy: 2025-12-15 14:33:11.400 UTC.
Launch window: 2025-12-15 13:28:00 UTC to 2025-12-15 13:28:09 UTC.

Backup Launch Opportunity #2   
Launch: 2025-12-15 13:41:20 UTC.
Deploy: 2025-12-15 14:46:31.400 UTC.
Launch window: 2025-12-15 13:41:20 UTC to 2025-12-15 13:41:59 UTC.

Backup Launch Opportunity #3   
Launch: 2025-12-15 13:49:40 UTC.
Deploy: 2025-12-15 14:54:51.400 UTC.
Launch window: 2025-12-15 13:49:40 UTC to 2025-12-15 13:52:59 UTC.

Backup Launch Opportunity #4   
Launch: 2025-12-15 14:03:30 UTC.
Deploy: 2025-12-15 15:08:41.400 UTC.
Launch window: 2025-12-15 14:03:30 UTC to 2025-12-15 14:10:49 UTC.

Backup Launch Opportunity #5   
Launch: 2025-12-15 14:10:50 UTC.
Deploy: 2025-12-15 15:16:01.400 UTC.
Launch window: 2025-12-15 14:10:50 UTC to 2025-12-15 14:18:19 UTC.

Backup Launch Opportunity #6   
Launch: 2025-12-15 14:27:00 UTC.
Deploy: 2025-12-15 15:32:11.400 UTC.
Launch window: 2025-12-15 14:27:00 UTC to 2025-12-15 14:37:19 UTC.

Backup Launch Opportunity #7   
Launch: 2025-12-15 15:02:10 UTC.
Deploy: 2025-12-15 16:07:21.400 UTC.
Launch window: 2025-12-15 15:02:10 UTC to 2025-12-15 15:05:49 UTC.

Backup Launch Opportunity #8   
Launch: 2025-12-15 15:27:40 UTC.
Deploy: 2025-12-15 16:32:51.400 UTC.
Launch window: 2025-12-15 15:27:40 UTC to 2025-12-15 15:28:29 UTC.

Backup Launch Opportunity #9   
Launch: 2025-12-15 15:37:30 UTC.
Deploy: 2025-12-15 16:42:41.400 UTC.
Launch window: 2025-12-15 15:37:30 UTC to 2025-12-15 15:50:39 UTC.

Backup Launch Opportunity #10   
Launch: 2025-12-15 15:50:40 UTC.
Deploy: 2025-12-15 16:55:51.400 UTC.
Launch window: 2025-12-15 15:50:40 UTC to 2025-12-15 15:56:09 UTC.

Backup Launch Opportunity #11   
Launch: 2025-12-15 16:02:20 UTC.
Deploy: 2025-12-15 17:07:31.400 UTC.
Launch window: 2025-12-15 16:02:20 UTC to 2025-12-15 16:04:59 UTC.

Backup Launch Opportunity #12   
Launch: 2025-12-15 16:05:00 UTC.
Deploy: 2025-12-15 17:10:11.400 UTC.
Launch window: 2025-12-15 16:05:00 UTC to 2025-12-15 16:14:39 UTC.

Backup Launch Opportunity #13   
Launch: 2025-12-15 16:38:50 UTC.
Deploy: 2025-12-15 17:44:01.400 UTC.
Launch window: 2025-12-15 16:38:50 UTC to 2025-12-15 16:40:59 UTC.

Backup Launch Opportunity #14   
Launch: 2025-12-15 16:43:10 UTC.
Deploy: 2025-12-15 17:48:21.400 UTC.
Launch window: 2025-12-15 16:43:10 UTC to 2025-12-15 16:45:29 UTC.

Backup Launch Opportunity #15   
Launch: 2025-12-15 16:58:30 UTC.
Deploy: 2025-12-15 18:03:41.400 UTC.
Launch window: 2025-12-15 16:58:30 UTC to 2025-12-15 17:00:49 UTC.
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Re: SpaceX F9 : Starlink group 6-99 : KSC LC-39A : 15 December 2025 (13:27 UTC)
« Reply #7 on: 12/14/2025 08:54 pm »
Quote from: zubenelgenubi on 12/14/2025 08:20 pm
https://celestrak.org/NORAD/elements/supplemental/
Supplemental GP Element Sets
Current as of 2025 Dec 14 21:17:10 UTC (Day 348)

NextSpaceflight and SpaceX are showing 13:11:00 as the intended launch time, which doesn't match any of the above??
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Re: SpaceX F9 : Starlink group 6-99 : KSC LC-39A : 15 December 2025 (13:27 UTC)
« Reply #8 on: 12/14/2025 09:40 pm »
Quote from: catdlr on 12/14/2025 08:54 pm
Quote from: zubenelgenubi on 12/14/2025 08:20 pm
https://celestrak.org/NORAD/elements/supplemental/
Supplemental GP Element Sets
Current as of 2025 Dec 14 21:17:10 UTC (Day 348)

NextSpaceflight and SpaceX are [still] showing 13:11:00 as the intended launch time, which doesn't match any of the above??
Note my addition in [ ] to your post above.

IDK, but I suspect either the SpaceX clock has not yet been updated (has happened before),
OR Celestrak needs to update their data (has happened before).
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Re: SpaceX F9 : Starlink group 6-99 : KSC LC-39A : 15 December 2025 (13:27 UTC)
« Reply #9 on: 12/14/2025 10:03 pm »
Quote from: zubenelgenubi on 12/14/2025 09:40 pm
Quote from: catdlr on 12/14/2025 08:54 pm
Quote from: zubenelgenubi on 12/14/2025 08:20 pm
https://celestrak.org/NORAD/elements/supplemental/
Supplemental GP Element Sets
Current as of 2025 Dec 14 21:17:10 UTC (Day 348)

NextSpaceflight and SpaceX are [still] showing 13:11:00 as the intended launch time, which doesn't match any of the above??
Note my addition in [ ] to your post above.

IDK, but I suspect either the SpaceX clock has not yet been updated (has happened before),
OR Celestrak needs to update their data (has happened before).

SpaceX just changed the countdown to TBD on their website for this launch, probably to adjust to your list.
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Re: SpaceX F9 : Starlink group 6-99 : KSC LC-39A : TBD December 2025 (TBD UTC)
« Reply #10 on: 12/15/2025 12:03 am »
Not yet officially confirmed, but both Celestrak and Ben Cooper are showing this delaying to the 16th:

https://celestrak.org/NORAD/elements/supplemental/
Supplemental GP Element Sets
Current as of 2025 Dec 15 00:46:26 UTC (Day 349)
Quote
Starlink G6-99 Pre-Launch   
Derived from a pre-launch Starlink-G6-99 state vector, provided by SpaceX. SupGP data is provided for the entire stack, as well as one for a single satellite.

Launch: 2025-12-16 12:45:00 UTC.
Deploy: 2025-12-16 13:50:11.400 UTC.
Launch window: 2025-12-16 12:45:00 UTC to 2025-12-16 12:47:29 UTC.

Backup Launch Opportunity #1
Launch: 2025-12-16 12:54:20 UTC.
Deploy: 2025-12-16 13:59:31.400 UTC.
Launch window: 2025-12-16 12:54:20 UTC to 2025-12-16 12:59:09 UTC.

Backup Launch Opportunity #2
Launch: 2025-12-16 12:59:20 UTC.
Deploy: 2025-12-16 14:04:31.400 UTC.
Launch window: 2025-12-16 12:59:20 UTC to 2025-12-16 12:59:29 UTC.

Backup Launch Opportunity #3
Launch: 2025-12-16 13:00:50 UTC.
Deploy: 2025-12-16 14:06:01.400 UTC.
Launch window: 2025-12-16 13:00:50 UTC to 2025-12-16 13:00:59 UTC.

Backup Launch Opportunity #4
Launch: 2025-12-16 13:11:00 UTC.
Deploy: 2025-12-16 14:16:11.400 UTC.
Launch window: 2025-12-16 13:11:00 UTC to 2025-12-16 13:14:49 UTC.

Backup Launch Opportunity #5
Launch: 2025-12-16 13:22:40 UTC.
Deploy: 2025-12-16 14:27:51.400 UTC.
Launch window: 2025-12-16 13:22:40 UTC to 2025-12-16 13:22:59 UTC.

Backup Launch Opportunity #6
Launch: 2025-12-16 13:30:40 UTC.
Deploy: 2025-12-16 14:35:51.400 UTC.
Launch window: 2025-12-16 13:30:40 UTC to 2025-12-16 13:34:09 UTC.

Backup Launch Opportunity #7
Launch: 2025-12-16 13:39:00 UTC.
Deploy: 2025-12-16 14:44:11.400 UTC.
Launch window: 2025-12-16 13:39:00 UTC to 2025-12-16 13:44:39 UTC.

Backup Launch Opportunity #8
Launch: 2025-12-16 13:44:40 UTC.
Deploy: 2025-12-16 14:49:51.400 UTC.
Launch window: 2025-12-16 13:44:40 UTC to 2025-12-16 13:47:59 UTC.

Backup Launch Opportunity #9
Launch: 2025-12-16 14:02:10 UTC.
Deploy: 2025-12-16 15:07:21.400 UTC.
Launch window: 2025-12-16 14:02:10 UTC to 2025-12-16 14:13:19 UTC.

Backup Launch Opportunity #10
Launch: 2025-12-16 14:13:20 UTC.
Deploy: 2025-12-16 15:18:31.400 UTC.
Launch window: 2025-12-16 14:13:20 UTC to 2025-12-16 14:17:59 UTC.

Backup Launch Opportunity #11
Launch: 2025-12-16 14:27:30 UTC.
Deploy: 2025-12-16 15:32:41.400 UTC.
Launch window: 2025-12-16 14:27:30 UTC to 2025-12-16 14:30:49 UTC.

Backup Launch Opportunity #12
Launch: 2025-12-16 14:31:00 UTC.
Deploy: 2025-12-16 15:36:11.400 UTC.
Launch window: 2025-12-16 14:31:00 UTC to 2025-12-16 14:31:09 UTC.

Backup Launch Opportunity #13
Launch: 2025-12-16 14:46:50 UTC.
Deploy: 2025-12-16 15:52:01.400 UTC.
Launch window: 2025-12-16 14:46:50 UTC to 2025-12-16 14:49:09 UTC.

Backup Launch Opportunity #14
Launch: 2025-12-16 14:56:40 UTC.
Deploy: 2025-12-16 16:01:51.400 UTC.
Launch window: 2025-12-16 14:56:40 UTC to 2025-12-16 15:01:49 UTC.

Backup Launch Opportunity #15
Launch: 2025-12-16 15:09:00 UTC.
Deploy: 2025-12-16 16:14:11.400 UTC.
Launch window: 2025-12-16 15:09:00 UTC to 2025-12-16 15:10:19 UTC.

Backup Launch Opportunity #16
Launch: 2025-12-16 15:10:20 UTC.
Deploy: 2025-12-16 16:15:31.400 UTC.
Launch window: 2025-12-16 15:10:20 UTC to 2025-12-16 15:10:29 UTC.

Backup Launch Opportunity #17
Launch: 2025-12-16 15:19:50 UTC.
Deploy: 2025-12-16 16:25:01.400 UTC.
Launch window: 2025-12-16 15:19:50 UTC to 2025-12-16 15:24:39 UTC.

Backup Launch Opportunity #18
Launch: 2025-12-16 15:24:40 UTC.
Deploy: 2025-12-16 16:29:51.400 UTC.
Launch window: 2025-12-16 15:24:40 UTC to 2025-12-16 15:26:49 UTC.

Backup Launch Opportunity #19
Launch: 2025-12-16 15:32:30 UTC.
Deploy: 2025-12-16 16:37:41.400 UTC.
Launch window: 2025-12-16 15:32:30 UTC to 2025-12-16 15:32:49 UTC.

Backup Launch Opportunity #20
Launch: 2025-12-16 15:42:20 UTC.
Deploy: 2025-12-16 16:47:31.400 UTC.
Launch window: 2025-12-16 15:42:20 UTC to 2025-12-16 15:53:19 UTC.

Backup Launch Opportunity #21
Launch: 2025-12-16 15:53:20 UTC.
Deploy: 2025-12-16 16:58:31.400 UTC.
Launch window: 2025-12-16 15:53:20 UTC to 2025-12-16 15:55:19 UTC.

Backup Launch Opportunity #22
Launch: 2025-12-16 16:01:20 UTC.
Deploy: 2025-12-16 17:06:31.400 UTC.
Launch window: 2025-12-16 16:01:20 UTC to 2025-12-16 16:07:19 UTC.

Backup Launch Opportunity #23
Launch: 2025-12-16 16:21:40 UTC.
Deploy: 2025-12-16 17:26:51.400 UTC.
Launch window: 2025-12-16 16:21:40 UTC to 2025-12-16 16:21:49 UTC.

Backup Launch Opportunity #24
Launch: 2025-12-16 16:21:50 UTC.
Deploy: 2025-12-16 17:27:01.400 UTC.
Launch window: 2025-12-16 16:21:50 UTC to 2025-12-16 16:22:59 UTC.

Backup Launch Opportunity #25
Launch: 2025-12-16 16:29:00 UTC.
Deploy: 2025-12-16 17:34:11.400 UTC.
Launch window: 2025-12-16 16:29:00 UTC to 2025-12-16 16:36:09 UTC.
« Last Edit: 12/15/2025 02:42 am by zubenelgenubi »
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Re: SpaceX F9 : Starlink group 6-99 : KSC LC-39A : NET 16 December 2025 (12:45 UTC)
« Reply #11 on: 12/15/2025 12:08 am »
and opportunity #0 match NextSpace Flight

Launch: 2025-12-16 12:45:00 UTC.
Deploy: 2025-12-16 13:50:11.400 UTC.
Launch window: 2025-12-16 12:45:00 UTC to 2025-12-16 12:47:29 UTC.
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Re: SpaceX F9 : Starlink group 6-99 : KSC LC-39A : NET 16 December 2025 (12:45 UTC)
« Reply #12 on: 12/15/2025 01:09 am »
Probably the same poor weather forecast as delayed the Atlas launch.
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Re: SpaceX F9 : Starlink group 6-99 : KSC LC-39A : NET 16 December 2025 (12:45 UTC)
« Reply #13 on: 12/15/2025 01:34 am »
Quote from: zubenelgenubi on 12/15/2025 01:09 am
Probably the same poor weather forecast as delayed the Atlas launch.

Its' also delaying 6-82 tonight
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Re: SpaceX F9 : Starlink group 6-99 : KSC LC-39A : NET 16 December 2025 (12:45 UTC)
« Reply #14 on: 12/15/2025 01:38 am »
« Last Edit: 12/15/2025 01:38 am by catdlr »
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Re: SpaceX F9 : Starlink group 6-99 : KSC LC-39A : 17 December 2025 (12:19 UTC)
« Reply #15 on: 12/15/2025 03:29 pm »
Delayed to December 17 per SpaceX's mission page.

Booster recovery weather risk might be the reason ("Moderate" risk for 16th & "Low-Moderate" for 17th).
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Offline zubenelgenubi

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Re: SpaceX F9 : Starlink group 6-99 : KSC LC-39A : 17 December 2025 (12:19 UTC)
« Reply #16 on: 12/15/2025 06:09 pm »
Quote from: Galactic Penguin SST on 12/15/2025 03:29 pm
Delayed to December 17 per SpaceX's mission page.

Booster recovery weather risk might be the reason ("Moderate" risk for 16th & "Low-Moderate" for 17th).

https://www.spacex.com/launches/sl-6-99
Launch 17 December 12:19 to 16:19 UTC = 07:19 to 11:19 am EST
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Re: SpaceX F9 : Starlink group 6-99 : KSC LC-39A : 17 December 2025 (12:19 UTC)
« Reply #17 on: 12/15/2025 06:18 pm »
Quote from: zubenelgenubi on 12/15/2025 06:09 pm
Quote from: Galactic Penguin SST on 12/15/2025 03:29 pm
Delayed to December 17 per SpaceX's mission page.

Booster recovery weather risk might be the reason ("Moderate" risk for 16th & "Low-Moderate" for 17th).

https://www.spacex.com/launches/sl-6-99
Launch 17 December 12:19 to 16:19 UTC = 07:19 to 11:19 am EST


Fog at VSFB doesn't seem as bad as wind.
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Offline zubenelgenubi

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Re: SpaceX F9 : Starlink group 6-99 : KSC LC-39A : 17 December 2025 (12:22 UTC)
« Reply #18 on: 12/15/2025 11:14 pm »
Quote from: zubenelgenubi on 12/15/2025 06:09 pm
Quote from: Galactic Penguin SST on 12/15/2025 03:29 pm
Delayed to December 17 per SpaceX's mission page.

Booster recovery weather risk might be the reason ("Moderate" risk for 16th & "Low-Moderate" for 17th).
https://www.spacex.com/launches/sl-6-99
Launch 17 December 12:19 to 16:19 UTC = 07:19 to 11:19 am EST

https://celestrak.org/NORAD/elements/supplemental/
Supplemental GP Element Sets
Current as of 2025 Dec 15 22:17:56 UTC (Day 349)
Quote
Starlink G6-99 Pre-Launch   
Derived from a pre-launch Starlink-G6-99 state vector, provided by SpaceX. SupGP data is provided for the entire stack, as well as one for a single satellite.

Launch: 2025-12-17 12:22:20 UTC.
Deploy: 2025-12-17 13:27:31.400 UTC.
Launch window: 2025-12-17 12:22:20 UTC to 2025-12-17 12:23:29 UTC.

Backup Launch Opportunity #1   
Launch: 2025-12-17 12:23:30 UTC.
Deploy: 2025-12-17 13:28:41.400 UTC.
Launch window: 2025-12-17 12:23:30 UTC to 2025-12-17 12:35:49 UTC.

Backup Launch Opportunity #2   
Launch: 2025-12-17 12:52:50 UTC.
Deploy: 2025-12-17 13:58:01.400 UTC.
Launch window: 2025-12-17 12:52:50 UTC to 2025-12-17 13:03:29 UTC.

Backup Launch Opportunity #3   
Launch: 2025-12-17 13:18:20 UTC.
Deploy: 2025-12-17 14:23:31.400 UTC.
Launch window: 2025-12-17 13:18:20 UTC to 2025-12-17 13:18:39 UTC.

Backup Launch Opportunity #4   
Launch: 2025-12-17 13:18:40 UTC.
Deploy: 2025-12-17 14:23:51.400 UTC.
Launch window: 2025-12-17 13:18:40 UTC to 2025-12-17 13:20:19 UTC.

Backup Launch Opportunity #5   
Launch: 2025-12-17 13:20:20 UTC.
Deploy: 2025-12-17 14:25:31.400 UTC.
Launch window: 2025-12-17 13:20:20 UTC to 2025-12-17 13:31:49 UTC.

Backup Launch Opportunity #6   
Launch: 2025-12-17 13:42:10 UTC.
Deploy: 2025-12-17 14:47:21.400 UTC.
Launch window: 2025-12-17 13:42:10 UTC to 2025-12-17 13:43:49 UTC.

Backup Launch Opportunity #7   
Launch: 2025-12-17 13:43:50 UTC.
Deploy: 2025-12-17 14:49:01.400 UTC.
Launch window: 2025-12-17 13:43:50 UTC to 2025-12-17 13:47:09 UTC.

Backup Launch Opportunity #8   
Launch: 2025-12-17 13:47:10 UTC.
Deploy: 2025-12-17 14:52:21.400 UTC.
Launch window: 2025-12-17 13:47:10 UTC to 2025-12-17 13:48:39 UTC.

Backup Launch Opportunity #9   
Launch: 2025-12-17 14:01:10 UTC.
Deploy: 2025-12-17 15:06:21.400 UTC.
Launch window: 2025-12-17 14:01:10 UTC to 2025-12-17 14:01:29 UTC.

Backup Launch Opportunity #10   
Launch: 2025-12-17 14:01:30 UTC.
Deploy: 2025-12-17 15:06:41.400 UTC.
Launch window: 2025-12-17 14:01:30 UTC to 2025-12-17 14:15:39 UTC.

Backup Launch Opportunity #11   
Launch: 2025-12-17 14:30:00 UTC.
Deploy: 2025-12-17 15:35:11.400 UTC.
Launch window: 2025-12-17 14:30:00 UTC to 2025-12-17 14:37:29 UTC.

Backup Launch Opportunity #12   
Launch: 2025-12-17 14:55:00 UTC.
Deploy: 2025-12-17 16:00:11.400 UTC.
Launch window: 2025-12-17 14:55:00 UTC to 2025-12-17 14:56:59 UTC.

Backup Launch Opportunity #13   
Launch: 2025-12-17 14:57:00 UTC.
Deploy: 2025-12-17 16:02:11.400 UTC.
Launch window: 2025-12-17 14:57:00 UTC to 2025-12-17 14:58:19 UTC.

Backup Launch Opportunity #14   
Launch: 2025-12-17 14:59:40 UTC.
Deploy: 2025-12-17 16:04:51.400 UTC.
Launch window: 2025-12-17 14:59:40 UTC to 2025-12-17 15:09:59 UTC.

Backup Launch Opportunity #15   
Launch: 2025-12-17 15:19:00 UTC.
Deploy: 2025-12-17 16:24:11.400 UTC.
Launch window: 2025-12-17 15:19:00 UTC to 2025-12-17 15:19:29 UTC.

Backup Launch Opportunity #16   
Launch: 2025-12-17 15:19:30 UTC.
Deploy: 2025-12-17 16:24:41.400 UTC.
Launch window: 2025-12-17 15:19:30 UTC to 2025-12-17 15:23:29 UTC.

Backup Launch Opportunity #17   
Launch: 2025-12-17 15:26:40 UTC.
Deploy: 2025-12-17 16:31:51.400 UTC.
Launch window: 2025-12-17 15:26:40 UTC to 2025-12-17 15:27:09 UTC.

Backup Launch Opportunity #18   
Launch: 2025-12-17 15:27:10 UTC.
Deploy: 2025-12-17 16:32:21.400 UTC.
Launch window: 2025-12-17 15:27:10 UTC to 2025-12-17 15:29:09 UTC.

Backup Launch Opportunity #19   
Launch: 2025-12-17 15:41:00 UTC.
Deploy: 2025-12-17 16:46:11.400 UTC.
Launch window: 2025-12-17 15:41:00 UTC to 2025-12-17 15:41:29 UTC.
SpaceX countdown clock is currently T-0 17 December 12:19:00 UTC, window opening.
« Last Edit: 12/16/2025 11:32 pm by zubenelgenubi »
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Offline zubenelgenubi

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Re: SpaceX F9 : Starlink group 6-99 : KSC LC-39A : 17 December 2025 (13:42 UTC)
« Reply #19 on: 12/16/2025 11:35 pm »
Quote from: zubenelgenubi on 12/15/2025 11:14 pm
SpaceX countdown clock is currently T-0 17 December 12:19:00 UTC, window opening.

https://www.spacex.com/launches/sl-6-99
New SpaceX T-0 13:42:10 UTC = 8:42:10 am EST
Backup Launch Opportunity #6   
Launch: 2025-12-17 13:42:10 UTC.
Deploy: 2025-12-17 14:47:21.400 UTC.
Launch window: 2025-12-17 13:42:10 UTC to 2025-12-17 13:43:49 UTC.
« Last Edit: 12/16/2025 11:38 pm by zubenelgenubi »
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Support your local planetarium! (COVID-panic and forward: Now more than ever.) My current avatar is saying "i wants to go uppies!" Yes, there are God-given rights. Do you wish to gainsay the Declaration of Independence?
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