SpaceX F9 : Starlink group 11-16 : VSFB SLC-4E : 23 May 2025 (22:32 UTC)

[zubenelgenubi]

Thread for the Starlink Group 11-16 launch.

Launch 23 May 2025, at 22:32:20 UTC (3:32 pm PDT), from Vandenberg SLC-4E, on booster 1075-18. The first stage will land aboard Of Course I Still Love You.

Payload 27 Starlink V2.0 Mini satellites, to a 53.16 degree inclination orbit on a southeastern trajectory.  Initial orbit 265 x 276 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

[zubenelgenubi]

Near-term SLC-4E schedule, UTC date:

Starlink 15-3  May 10  OCISLY  ✅️

Starlink 15-4  May 13  OCISLY  ✅️

Starlink 15-5  May 16  OCISLY

NROL-48 may launch in May.  Otherwise, it's successive Starlink launches.

We will see if the short turnarounds continue.

[Galactic Penguin SST]

Starlink Group 11-16 has appeared on CADENA OIS:

Primary Launch Day 20 MAY 2142Z-0213Z Backup Launch Day (1) 21 MAY 2120Z-0151Z Backup Launch Day (2) 22 MAY 2058Z-0129Z Backup Launch Day (3) 23 MAY 2036Z-0107Z Backup Launch Day (4) 24 MAY 2014Z-0045Z Backup Launch Day (5) 25 MAY 1952Z-0023Z Backup Launch Day (6) 26 MAY 1929Z-0000Z

[randomname]

NGA notices for this launch.

150447Z MAY 25
NAVAREA XII 281/25(18,21).
EASTERN NORTH PACIFIC.
CALIFORNIA.
1. HAZARDOUS OPERATIONS, ROCKET LAUNCHING
   A. 202142Z TO 210205Z MAY, ALTERNATE
      212120Z TO 220143Z, 222058Z TO 230121Z,
      232036Z TO 240059Z, 242014Z TO 250037Z,
      251952Z TO 260015Z AND 261929Z TO 262352Z MAY
      IN AREA BOUND BY
      34-40.00N 120-39.00W, 34-29.00N 120-16.00W,
      33-01.00N 119-08.00W, 32-37.00N 118-51.00W,
      32-35.00N 118-53.00W, 34-32.00N 120-38.00W.
   B. 202142Z TO 210207Z MAY, ALTERNATE
      212120Z TO 220145Z, 222058Z TO 230123Z,
      232036Z TO 240101Z, 242014Z TO 250039Z,
      251952Z TO 260017Z AND 261929Z TO 262354Z MAY
      IN AREA BOUND BY
      30-47.00N 117-26.00W, 30-36.00N 117-07.00W,
      30-28.00N 116-59.00W, 30-11.00N 116-54.00W,
      30-06.00N 117-04.00W, 30-19.00N 117-20.00W.
   C. 202142Z TO 210213Z MAY, ALTERNATE
      212120Z TO 220151Z, 222058Z TO 230129Z,
      232036Z TO 240107Z, 242014Z TO 250045Z,
      251952Z TO 260023Z AND 261929Z TO 270001Z MAY
      IN AREA BOUND BY
      28-58.00N 116-22.00W, 29-12.00N 116-48.00W,
      29-32.00N 117-06.00W, 29-46.00N 117-11.00W,
      30-03.00N 117-10.00W, 30-11.00N 116-57.00W,
      30-11.00N 116-36.00W, 30-05.00N 116-28.00W,
      29-42.00N 116-06.00W, 29-42.00N 116-06.00W,
      29-18.00N 115-56.00W.
2. CANCEL THIS MSG 280001Z MAY 25.//

150014Z MAY 25
HYDROPAC 1248/25(21,22,83).
EASTERN PACIFIC.
DNC 06, DNC 07, DNC 13.
1. HAZARDOUS OPERATIONS, SPACE DEBRIS
   2105Z TO 0406Z DAILY 19 THRU 27 MAY
   IN AREA BOUND BY
   34-20.00S 090-24.00W, 31-22.00S 090-24.00W,
   00-10.00S 115-17.00W, 11-37.00N 123-13.00W,
   10-26.00N 124-56.00W, 01-19.00S 116-54.00W.
2. CANCEL THIS MSG 270506Z MAY 25.

150014Z MAY 25
NAVAREA XII 280/25(21,22,83).
EASTERN PACIFIC.
1. HAZARDOUS OPERATIONS, SPACE DEBRIS
   2105Z TO 0406Z DAILY 19 THRU 27 MAY
   IN AREA BOUND BY
   34-20.00S 090-24.00W, 31-22.00S 090-24.00W,
   00-10.00S 115-17.00W, 11-37.00N 123-13.00W,
   10-26.00N 124-56.00W, 01-19.00S 116-54.00W.
2. CANCEL THIS MSG 270506Z MAY 25.

[Martin_G]

https://www.fly.faa.gov/adv/adv_spt.jsp:

SPACEX STARLINK 11-16, VANDENBERG SFB, CA
PRIMARY:   05/20/25   2124Z-0406Z
BACKUP:      05/21/25   2120Z-0344Z

[zubenelgenubi]

Falcon 9 first stages are now cleared for use up to forty times for non-human spaceflight missions, although that number is apparently more restricted for Cargo Dragon and Cygnus than these other payloads.

Available first stages, with UTC date of most recent recovery:
1075.18  Feb 1
1081.14  Mar 15  Starlink 15-3
1088.6    Apr 4     Starlink 15-4
1093.2    Apr 7     Starlink 15-5
1071.25  Apr 12
1082.13  Apr 20
1063.26  Apr 28
1081.15  May 10

Edit May 22: It's B1075.18, after a long turnaround beginning with its previous landing on February 1st.

[Galactic Penguin SST]

Delayed to NET May 21:

A0648/25 NOTAMN
Q) NTTT/QRDCA/IV/BO/W/000/999/0325N12003W011
A) NTTT
B) 2505212256 C) 2505270153
D) 21 2256-0344, 22 2234-0322, 23 2212-0300,
24 2150-0238, 25 2128-0216, 26 2105-0153
E) TEMPORARY DANGEROUS AREA DUE TO ATMOSPHERIC RE-ENTRY SPACEX
STARLINK 11-16 UPPER STAGE IN TAHITI FIR WITHIN AN AREA BOUNDED
BY FOLLOWING POINTS : 
0330N 12000W - 0316N 12000W - 0330N 12010W - 0330N 12000W 
THIS ACTIVITY IMPACTS KZAK, MMFO, SCIZ AND NO FIR AS WELL.
AIRSPACE USERS ARE ADVISED OF THE PARTICULARLY DANGEROUS NATURE
OF THE ACTIVITY AND ARE STRONGLY INVITED TO AVOID THE AREA
DURING THE ACTIVITY TIME SLOT.
OPERATORS ARE INVITED TO FILE THEIR FLIGHT PLAN WITH A TRAJECTORY
THAT ENSURES THAT TE AREA IS CIRCUMNAVIGATED.
THE FRENCH VERSION OF THIS NOTAM IS C1196/25
F) SFC G) UNL

[zubenelgenubi]

https://celestrak.org/NORAD/elements/supplemental/
Current as of 2025 May 18 23:59:12 UTC (Day 138)

Starlink G11-16 Pre-Launch   
Derived from a pre-launch Starlink-G11-16 state vector, provided by SpaceX. SupGP data is provided for the entire stack, as well as one for a single satellite.

Launch: 2025-05-21 21:20:00 UTC.
Deploy: 2025-05-21 22:20:52.280 UTC.
Launch window: 2025-05-21 21:20:00 UTC to 2025-05-22 01:20:00 UTC.

And, https://celestrak.org/NORAD/elements/supplemental/table.php?FILE=starlink-g11-16&FORMAT=tle
Pre-Launch Derived Orbit (stack): 265 km x 276 km x 53.16 deg

[Galactic Penguin SST]

NET May 22 now:

Primary Launch Day 22 MAY 2058Z-0129Z Backup Launch Day (1) 23 MAY 2036Z-0107Z Backup Launch Day (2) 24 MAY 2014Z-0045Z Backup Launch Day (3) 25 MAY 1952Z-0023Z Backup Launch Day (4) 26 MAY 1929Z-0000Z Backup Launch Day (5) 27 MAY 1907Z-2338Z

Starlink G11-16 Pre-Launch   
Derived from a pre-launch Starlink-G11-16 state vector, provided by SpaceX. SupGP data is provided for the entire stack, as well as one for a single satellite.
Launch: 2025-05-22 20:58:00 UTC.
Deploy: 2025-05-22 21:58:52.280 UTC.
Launch window: 2025-05-22 20:58:00 UTC to 2025-05-23 00:58:00 UTC.

[zubenelgenubi]

https://celestrak.org/NORAD/elements/supplemental/
Current as of 2025 May 22 01:59:58 UTC (Day 142)

Starlink G11-16 Pre-Launch   
Derived from a pre-launch Starlink-G11-16 state vector, provided by SpaceX. SupGP data is provided for the entire stack, as well as one for a single satellite.

Launch: 2025-05-22 21:29:30 UTC.
Deploy: 2025-05-22 22:30:22.280 UTC.
Launch window: 2025-05-22 21:29:30 UTC to 2025-05-22 21:37:39 UTC.

Backup Launch Opportunity #1   
Launch: 2025-05-22 21:51:40 UTC.
Deploy: 2025-05-22 22:52:32.280 UTC.
Launch window: 2025-05-22 21:51:40 UTC to 2025-05-22 21:53:49 UTC.

Backup Launch Opportunity #2   
Launch: 2025-05-22 21:53:50 UTC.
Deploy: 2025-05-22 22:54:42.280 UTC.
Launch window: 2025-05-22 21:53:50 UTC to 2025-05-22 22:17:19 UTC.

Backup Launch Opportunity #3   
Launch: 2025-05-22 22:24:10 UTC.
Deploy: 2025-05-22 23:25:02.280 UTC.
Launch window: 2025-05-22 22:24:10 UTC to 2025-05-22 22:29:19 UTC.

Backup Launch Opportunity #4   
Launch: 2025-05-22 22:29:20 UTC.
Deploy: 2025-05-22 23:30:12.280 UTC.
Launch window: 2025-05-22 22:29:20 UTC to 2025-05-22 22:33:29 UTC.

Backup Launch Opportunity #5   
Launch: 2025-05-22 23:07:00 UTC.
Deploy: 2025-05-23 00:07:52.280 UTC.
Launch window: 2025-05-22 23:07:00 UTC to 2025-05-22 23:09:59 UTC.

Backup Launch Opportunity #6   
Launch: 2025-05-22 23:10:00 UTC.
Deploy: 2025-05-23 00:10:52.280 UTC.
Launch window: 2025-05-22 23:10:00 UTC to 2025-05-22 23:11:59 UTC.

Backup Launch Opportunity #7   
Launch: 2025-05-22 23:15:10 UTC.
Deploy: 2025-05-23 00:16:02.280 UTC.
Launch window: 2025-05-22 23:15:10 UTC to 2025-05-22 23:16:09 UTC.

Backup Launch Opportunity #8   
Launch: 2025-05-22 23:31:10 UTC.
Deploy: 2025-05-23 00:32:02.280 UTC.
Launch window: 2025-05-22 23:31:10 UTC to 2025-05-22 23:34:59 UTC.

Backup Launch Opportunity #9   
Launch: 2025-05-22 23:35:00 UTC.
Deploy: 2025-05-23 00:35:52.280 UTC.
Launch window: 2025-05-22 23:35:00 UTC to 2025-05-22 23:48:49 UTC.

Backup Launch Opportunity #10   
Launch: 2025-05-22 23:53:30 UTC.
Deploy: 2025-05-23 00:54:22.280 UTC.
Launch window: 2025-05-22 23:53:30 UTC to 2025-05-22 23:55:09 UTC.

Backup Launch Opportunity #11   
Launch: 2025-05-22 23:59:00 UTC.
Deploy: 2025-05-23 00:59:52.280 UTC.
Launch window: 2025-05-22 23:59:00 UTC to 2025-05-23 00:00:39 UTC.

Backup Launch Opportunity #12   
Launch: 2025-05-23 00:00:40 UTC.
Deploy: 2025-05-23 01:01:32.280 UTC.
Launch window: 2025-05-23 00:00:40 UTC to 2025-05-23 00:08:49 UTC.

[meekGee]

https://celestrak.org/NORAD/elements/supplemental/
Current as of 2025 May 22 01:59:58 UTC (Day 142)

I believe that that also has already happened.

[Galactic Penguin SST]

Booster B1075 is making its return since its last launch way back on February 1st:

SpaceX is targeting Thursday, May 22 for a Falcon 9 launch of 27 Starlink satellites to low-Earth orbit from Space Launch Complex 4 East (SLC-4E) at Vandenberg Space Force Base in California. Liftoff is targeted for 3:03 p.m. PT, with backup opportunities available until 5:51 p.m. PT. If needed, additional launch opportunities are also available on Friday, May 23 starting at 1:36 p.m. PT.

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 new X TV app.

This is the 18th flight for the first stage booster supporting this mission, which previously launched SDA-0A, SARah-2, Transporter-11, and 14 Starlink missions. Following stage separation, the first stage will land on the Of Course I Still Love You droneship, which will be stationed in the Pacific Ocean.

There is the possibility that residents of Santa Barbara, San Luis Obispo, and Ventura counties may hear one or more sonic booms during the launch, but what residents experience will depend on weather and other conditions.

https://celestrak.org/NORAD/elements/supplemental/
Current as of 2025 May 22 03:20:34 UTC (Day 142)

Starlink G11-16 Pre-Launch
Derived from a pre-launch Starlink-G11-16 state vector, provided by SpaceX. SupGP data is provided for the entire stack, as well as one for a single satellite.
Launch: 2025-05-22 22:03:00 UTC.
Deploy: 2025-05-22 23:03:52.280 UTC.
Launch window: 2025-05-22 22:03:00 UTC to 2025-05-22 22:17:09 UTC.

Backup Launch Opportunity #1
Launch: 2025-05-22 22:24:40 UTC.
Deploy: 2025-05-22 23:25:32.280 UTC.
Launch window: 2025-05-22 22:24:40 UTC to 2025-05-22 22:27:59 UTC.

Backup Launch Opportunity #2
Launch: 2025-05-22 22:31:00 UTC.
Deploy: 2025-05-22 23:31:52.280 UTC.
Launch window: 2025-05-22 22:31:00 UTC to 2025-05-22 22:34:29 UTC.

Backup Launch Opportunity #3
Launch: 2025-05-22 23:05:00 UTC.
Deploy: 2025-05-23 00:05:52.280 UTC.
Launch window: 2025-05-22 23:05:00 UTC to 2025-05-22 23:09:59 UTC.

Backup Launch Opportunity #4
Launch: 2025-05-22 23:10:00 UTC.
Deploy: 2025-05-23 00:10:52.280 UTC.
Launch window: 2025-05-22 23:10:00 UTC to 2025-05-22 23:12:09 UTC.

Backup Launch Opportunity #5
Launch: 2025-05-22 23:15:10 UTC.
Deploy: 2025-05-23 00:16:02.280 UTC.
Launch window: 2025-05-22 23:15:10 UTC to 2025-05-22 23:16:19 UTC.

Backup Launch Opportunity #6
Launch: 2025-05-22 23:31:00 UTC.
Deploy: 2025-05-23 00:31:52.280 UTC.
Launch window: 2025-05-22 23:31:00 UTC to 2025-05-22 23:34:59 UTC.

Backup Launch Opportunity #7
Launch: 2025-05-22 23:35:00 UTC.
Deploy: 2025-05-23 00:35:52.280 UTC.
Launch window: 2025-05-22 23:35:00 UTC to 2025-05-22 23:48:39 UTC.

Backup Launch Opportunity #8
Launch: 2025-05-22 23:53:20 UTC.
Deploy: 2025-05-23 00:54:12.280 UTC.
Launch window: 2025-05-22 23:53:20 UTC to 2025-05-22 23:55:09 UTC.

Backup Launch Opportunity #9
Launch: 2025-05-22 23:59:30 UTC.
Deploy: 2025-05-23 01:00:22.280 UTC.
Launch window: 2025-05-22 23:59:30 UTC to 2025-05-23 00:00:39 UTC.

Backup Launch Opportunity #10
Launch: 2025-05-23 00:00:40 UTC.
Deploy: 2025-05-23 01:01:32.280 UTC.
Launch window: 2025-05-23 00:00:40 UTC to 2025-05-23 00:00:59 UTC.

Backup Launch Opportunity #11
Launch: 2025-05-23 00:08:00 UTC.
Deploy: 2025-05-23 01:08:52.280 UTC.
Launch window: 2025-05-23 00:08:00 UTC to 2025-05-23 00:09:59 UTC.

Backup Launch Opportunity #12
Launch: 2025-05-23 00:40:00 UTC.
Deploy: 2025-05-23 01:40:52.280 UTC.
Launch window: 2025-05-23 00:40:00 UTC to 2025-05-23 00:45:59 UTC.

Backup Launch Opportunity #13
Launch: 2025-05-23 00:49:00 UTC.
Deploy: 2025-05-23 01:49:52.280 UTC.
Launch window: 2025-05-23 00:49:00 UTC to 2025-05-23 00:51:09 UTC.

[Steven Pietrobon]

PDF of online press kit and link to X livestream.

https://x.com/i/broadcasts/1mrGmPmwYbvKy

[catdlr]

Here is a consolidated post of available video links for this launch:

SpaceX direct live broadcast on Twitter:  https://x.com/i/broadcasts/1mrGmPmwYbvKy

SpaceX Re-broadcast alternatives on YouTube: 
Space Affairs:  https://youtube.com/watch?v=4-bCWJOh-4Q

There is no planned NSF Live coverage. Alternate Pre-Launch Coverage:  https://youtube.com/@SpaceflightNowVideo/streams

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

Launch Ground Video (from local resident in Santa Barbara - I'll post if available)

Fleet Booster Number:  https://twitter.com/BoosterSpX

[zubenelgenubi]

Delayed to May 23.
https://www.spacex.com/launches/mission/?missionId=sl-11-16

SpaceX is targeting Friday, May 23 for a Falcon 9 launch of 27 Starlink satellites to low-Earth orbit from Space Launch Complex 4 East (SLC-4E) at Vandenberg Space Force Base in California. Liftoff is targeted for 1:36 p.m. PT, with backup opportunities available until 5:07 p.m. PT. If needed, additional launch opportunities are also available on Saturday, May 24 starting at 1:14 p.m. PT.

= 20:36 UTC


Are these weather delays?

[ZachS09]

Delayed to May 23.
https://www.spacex.com/launches/mission/?missionId=sl-11-16

SpaceX is targeting Friday, May 23 for a Falcon 9 launch of 27 Starlink satellites to low-Earth orbit from Space Launch Complex 4 East (SLC-4E) at Vandenberg Space Force Base in California. Liftoff is targeted for 1:36 p.m. PT, with backup opportunities available until 5:07 p.m. PT. If needed, additional launch opportunities are also available on Saturday, May 24 starting at 1:14 p.m. PT.

= 20:36 UTC


Are these weather delays?

I checked the Storm Radar app for the weather in Lompoc, CA (the closest city to Vandenberg), and it’s gonna be partly cloudy throughout this afternoon with no chance of precipitation. But the ground winds are 20 to 30 knots northwest with gusts up to 35 knots. That’s what Storm Radar calls a “gale warning”.

[catdlr]

Delayed to May 23.
https://www.spacex.com/launches/mission/?missionId=sl-11-16

SpaceX is targeting Friday, May 23 for a Falcon 9 launch of 27 Starlink satellites to low-Earth orbit from Space Launch Complex 4 East (SLC-4E) at Vandenberg Space Force Base in California. Liftoff is targeted for 1:36 p.m. PT, with backup opportunities available until 5:07 p.m. PT. If needed, additional launch opportunities are also available on Saturday, May 24 starting at 1:14 p.m. PT.

= 20:36 UTC


Are these weather delays?

I checked the Storm Radar app for the weather in Lompoc, CA (the closest city to Vandenberg), and it’s gonna be partly cloudy throughout this afternoon with no chance of precipitation. But the ground winds are 20 to 30 knots northwest with gusts up to 35 knots. That’s what Storm Radar calls a “gale warning”.

If that's the reason (Ground winds) it's no different for the next few days.

024
FXUS66 KLOX 221806
AFDLOX

Area Forecast Discussion...UPDATED
National Weather Service Los Angeles/Oxnard CA
1106 AM PDT Thu May 22 2025

.SYNOPSIS...22/912 AM.

Stronger onshore flow will bring a cooling trend through
Saturday. Temperatures will remain above normal today, but
will cool to normal by Saturday. Night through morning low clouds
and fog, returning to Southland coastal areas today, will expand
northward and inland the next couple of nights and mornings. A
deep marine layer depth will be in place over the weekend with
night through morning low clouds and fog extending well into the
valleys.

&&

.SHORT TERM (TDY-SAT)...22/921 AM.

***UPDATE***

Temperatures are trending cooler most areas except the Central
Coast this morning as onshore flow is increasing ahead of the
arrival of a weak trough from the west. The marine layer spread up
the coast to Santa Barbara and managed to push into the San
Gabriel Valley as the inversion deepened to just under 1500 feet.
The VBG sounding still shows the marine layer depth there under
500 feet so it will be another warm day in the foothills and
mountains.

Forecast looks on track for additional cooling Friday and into the
weekend.

[zubenelgenubi]

Delayed to May 23.
https://www.spacex.com/launches/mission/?missionId=sl-11-16

SpaceX is targeting Friday, May 23 for a Falcon 9 launch of 27 Starlink satellites to low-Earth orbit from Space Launch Complex 4 East (SLC-4E) at Vandenberg Space Force Base in California. Liftoff is targeted for 1:36 p.m. PT, with backup opportunities available until 5:07 p.m. PT. If needed, additional launch opportunities are also available on Saturday, May 24 starting at 1:14 p.m. PT.

= 20:36 UTC

https://celestrak.org/NORAD/elements/supplemental/
Current as of 2025 May 22 23:14:32 UTC (Day 142)

Starlink G11-16 Pre-Launch   
Derived from a pre-launch Starlink-G11-16 state vector, provided by SpaceX. SupGP data is provided for the entire stack, as well as one for a single satellite.

Launch: 2025-05-23 20:36:00 UTC.
Deploy: 2025-05-23 21:36:52.280 UTC.
Launch window: 2025-05-23 20:36:00 UTC to 2025-05-23 20:37:59 UTC.

Backup Launch Opportunity #1   
Launch: 2025-05-23 20:49:40 UTC.
Deploy: 2025-05-23 21:50:32.280 UTC.
Launch window: 2025-05-23 20:49:40 UTC to 2025-05-23 20:53:49 UTC.

Backup Launch Opportunity #2   
Launch: 2025-05-23 22:25:10 UTC.
Deploy: 2025-05-23 23:26:02.280 UTC.
Launch window: 2025-05-23 22:25:10 UTC to 2025-05-23 22:32:49 UTC.

Backup Launch Opportunity #3   
Launch: 2025-05-23 23:43:30 UTC.
Deploy: 2025-05-24 00:44:22.280 UTC.
Launch window: 2025-05-23 23:43:30 UTC to 2025-05-23 23:43:59 UTC.

Backup Launch Opportunity #4   
Launch: 2025-05-23 23:50:00 UTC.
Deploy: 2025-05-24 00:50:52.280 UTC.
Launch window: 2025-05-23 23:50:00 UTC to 2025-05-23 23:52:19 UTC.

Backup Launch Opportunity #5   
Launch: 2025-05-23 23:53:00 UTC.
Deploy: 2025-05-24 00:53:52.280 UTC.
Launch window: 2025-05-23 23:53:00 UTC to 2025-05-24 00:03:29 UTC.

Backup Launch Opportunity #6   
Launch: 2025-05-24 00:03:30 UTC.
Deploy: 2025-05-24 01:04:22.280 UTC.
Launch window: 2025-05-24 00:03:30 UTC to 2025-05-24 00:07:19 UTC.

[Galactic Penguin SST]

First delay of the day:

Liftoff is targeted for 3:32 p.m. PT, with backup opportunities available until 5:36 p.m. PT.

[zubenelgenubi]

First delay of the day:

Liftoff is targeted for 3:32 p.m. PT, with backup opportunities available until 5:36 p.m. PT.

= 22:32 UTC

https://celestrak.org/NORAD/elements/supplemental/
Current as of 2025 May 23 21:59:01 UTC (Day 143)

Starlink G11-16 Pre-Launch   
Derived from a pre-launch Starlink-G11-16 state vector, provided by SpaceX. SupGP data is provided for the entire stack, as well as one for a single satellite.

Launch: 2025-05-23 20:36:00 UTC.
Deploy: 2025-05-23 21:36:52.280 UTC.
Launch window: 2025-05-23 20:36:00 UTC to 2025-05-23 20:37:59 UTC.

⟹ Backup Launch Opportunity #1   
Launch: 2025-05-23 22:27:20 UTC.
Deploy: 2025-05-23 23:28:12.280 UTC.
Launch window: 2025-05-23 22:27:20 UTC to 2025-05-23 22:32:49 UTC.

Backup Launch Opportunity #2   
Launch: 2025-05-23 23:43:30 UTC.
Deploy: 2025-05-24 00:44:22.280 UTC.
Launch window: 2025-05-23 23:43:30 UTC to 2025-05-23 23:43:59 UTC.

Backup Launch Opportunity #3   
Launch: 2025-05-23 23:50:00 UTC.
Deploy: 2025-05-24 00:50:52.280 UTC.
Launch window: 2025-05-23 23:50:00 UTC to 2025-05-23 23:52:19 UTC.

Backup Launch Opportunity #4   
Launch: 2025-05-23 23:53:00 UTC.
Deploy: 2025-05-24 00:53:52.280 UTC.
Launch window: 2025-05-23 23:53:00 UTC to 2025-05-23 23:53:59 UTC.

Backup Launch Opportunity #5   
Launch: 2025-05-24 00:01:00 UTC.
Deploy: 2025-05-24 01:01:52.280 UTC.
Launch window: 2025-05-24 00:01:00 UTC to 2025-05-24 00:03:29 UTC.

Backup Launch Opportunity #6   
Launch: 2025-05-24 00:03:30 UTC.
Deploy: 2025-05-24 01:04:22.280 UTC.
Launch window: 2025-05-24 00:03:30 UTC to 2025-05-24 00:07:19 UTC.