Apollo 10 Timeline

 

 

Event

GET

(hhh:mm:ss)

GMT

Time

GMT

Date

Terminal countdown started.

-028:00:00

01:00:00

17-May-69

Scheduled 1-hour hold at T-3 hours 30 minutes.

-003:30:00

12:19:00

18-May-69

Countdown resumed at T-3 hours 30 minutes.

-003:30:00

13:19:00

18-May-69

Guidance reference release.

-000:00:16.978

16:48:43

18-May-69

S-IC engine start command.

-000:00:08.9

16:48:51

18-May-69

S-IC engine ignition (#5).

-000:00:06.4

16:48:53

18-May-69

All S-IC engines thrust OK.

-000:00:01.6

16:48:58

18-May-69

Range zero.

000:00:00.00

16:49:00

18-May-69

All holddown arms released (1st motion) (1.06 g).

000:00:00.25

16:49:00

18-May-69

Liftoff (umbilical disconnected).

000:00:00.58

16:49:00

18-May-69

Tower clearance yaw maneuver started.

000:00:01.6

16:49:01

18-May-69

Yaw maneuver ended.

000:00:10.0

16:49:10

18-May-69

Pitch and roll maneuver started.

000:00:13.05

16:49:13

18-May-69

Roll maneuver ended.

000:00:32.3

16:49:32

18-May-69

Mach 1 achieved.

000:01:06.8

16:50:06

18-May-69

Maximum dynamic pressure (694.232 lb/ft2).

000:01:22.6

16:50:22

18-May-69

Maximum bending moment (88,000,000 lbf-in).

000:01:24.6

16:50:24

18-May-69

S-IC center engine cutoff command.

000:02:15.16

16:51:15

18-May-69

Pitch maneuver ended.

000:02:38.7

16:51:38

18-May-69

S-IC outboard engine cutoff.

000:02:41.63

16:51:41

18-May-69

S-IC maximum total inertial acceleration (3.92 g).

000:02:41.71

16:51:41

18-May-69

S-IC maximum Earth-fixed velocity.

000:02:41.96

16:51:41

18-May-69

S-IC/S-II separation command.

000:02:42.31

16:51:42

18-May-69

S-II engine start command.

000:02:43.05

16:51:43

18-May-69

S-II ignition.

000:02:44.05

16:51:44

18-May-69

S-II aft interstage jettisoned.

000:03:12.3

16:52:12

18-May-69

Launch escape tower jettisoned.

000:03:17.8

16:52:17

18-May-69

Iterative guidance mode initiated.

000:03:22.9

16:52:22

18-May-69

S-IC apex.

000:04:26.87

16:53:26

18-May-69

S-II center engine cutoff.

000:07:40.61

16:56:40

18-May-69

S-II maximum total inertial acceleration (1.82 g).

000:07:40.69

16:56:40

18-May-69

S-IC impact (theoretical).

000:08:59.12

16:57:59

18-May-69

S-II outboard engine cutoff.

000:09:12.64

16:58:12

18-May-69

S-II maximum Earth-fixed velocity. S-II/S-IVB separation command.

000:09:13.50

16:58:13

18-May-69

S-IVB 1st burn start command.

000:09:13.60

16:58:13

18-May-69

S-IVB 1st burn ignition.

000:09:16.81

16:58:16

18-May-69

S-IVB ullage case jettisoned.

000:09:25.4

16:58:25

18-May-69

S-II apex.

000:09:57.21

16:58:57

18-May-69

S-IVB 1st burn cutoff command.

000:11:43.76

17:00:43

18-May-69

S-IVB 1st burn maximum Earth-fixed velocity and maximum total inertial acceleration (0.70 g).

000:11:43.84

17:00:43

18-May-69

Earth orbit insertion.

000:11:53.76

17:00:53

18-May-69

Maneuver to local horizontal attitude and orbital navigation started.

000:12:04.1

17:01:04

18-May-69

S-II impact (theoretical).

000:20:17.89

17:09:17

18-May-69

S-IVB 2nd burn restart preparation.

002:23:49.26

19:12:49

18-May-69

S-IVB 2nd burn restart command.

002:33:19.20

19:22:19

18-May-69

S-IVB 2nd burn ignition.

002:33:27.52

19:22:27

18-May-69

S-IVB 2nd burn cutoff.

002:39:10.58

19:28:10

18-May-69

S-IVB 2nd burn maximum total inertial acceleration (1.49 g).

002:39:10.66

19:28:10

18-May-69

S-IVB 2nd burn maximum Earth-fixed velocity. S-IVB safing procedures started.

002:39:11.30

19:28:11

18-May-69

Translunar injection.

002:39:20.58

19:28:20

18-May-69

Orbital navigation started.

002:39:29.6

19:28:29

18-May-69

CSM separated from S-IVB (ignition).

003:02:42.4

19:51:42

18-May-69

CSM separated from S-IVB (cutoff).

003:02:45.7

19:51:45

18-May-69

TV transmission started.

003:06:00

19:55:00

18-May-69

CSM docked with LM/S-IVB.

003:17:36.0

20:06:36

18-May-69

TV transmission ended.

003:28:00

20:17:00

18-May-69

TV transmission started.

003:56:00

20:45:00

18-May-69

CSM/LM ejected from S-IVB.

003:56:25.7

20:45:25

18-May-69

TV transmission ended.

004:09:25

20:58:25

18-May-69

CSM SPS evasive maneuver ignition.

004:39:09.8

21:28:09

18-May-69

CSM SPS evasive maneuver cutoff.

004:39:12.7

21:28:12

18-May-69

Maneuver to S-IVB slingshot attitude initiated.

004:42:15.8

21:31:15

18-May-69

S-IVB lunar slingshot maneuver - APS ignition.

004:45:36.4

21:34:36

18-May-69

S-IVB lead experiment - LOX lead started.

004:48:21.3

21:37:21

18-May-69

S-IVB lead experiment - LOX lead ended.

004:48:30.3

21:37:30

18-May-69

S-IVB lead experiment - LH2 lead started.

004:50:09.9

21:39:09

18-May-69

S-IVB lunar slingshot maneuver - APS cutoff.

004:50:17.0

21:39:17

18-May-69

S-IVB lead experiment - LH2 lead ended.

004:50:58.8

21:39:58

18-May-69

S-IVB safing - LH2 tank CVS open.

004:51:36.1

21:40:36

18-May-69

S-IVB lunar slingshot maneuver - LOX dump started.

004:54:15.79

21:43:15

18-May-69

S-IVB lunar slingshot maneuver - LOX dump ended.

004:59:16.00

21:48:16

18-May-69

TV transmission started.

005:06:34

21:55:34

18-May-69

S-IVB safing - LH2 tank NPV valve open.

005:16:09.8

22:05:09

18-May-69

TV transmission ended.

005:19:49

22:08:49

18-May-69

S-IVB lunar slingshot maneuver - APS ignition.

005:28:55.8

22:17:55

18-May-69

S-IVB lunar slingshot maneuver - APS cutoff.

005:29:04.9

22:18:04

18-May-69

TV transmission started.

007:11:27

00:00:27

19-May-69

TV transmission ended.

007:35:27

00:24:27

19-May-69

Midcourse correction ignition.

026:32:56.8

19:21:56

19-May-69

Midcourse correction cutoff.

026:33:03.9

19:22:03

19-May-69

TV transmission started.

027:00:48

19:49:48

19-May-69

TV transmission ended.

027:28:31

20:17:31

19-May-69

High-gain antenna reacquisition test.

028:50

21:39

19-May-69

TV transmission started (recorded).

048:00:51

16:49:51

20-May-69

TV transmission ended.

048:15:30

17:04:30

20-May-69

TV transmission started (recorded).

048:24:00

17:13:00

20-May-69

TV transmission ended.

048:27:51

17:16:51

20-May-69

TV transmission started.

049:54:00

18:43:00

20-May-69

TV transmission ended.

049:58:49

18:47:49

20-May-69

TV transmission started.

053:35:30

22:24:30

20-May-69

TV transmission ended.

054:00:30

22:49:30

20-May-69

Equigravisphere.

061:50:50

06:39:50

21-May-69

TV transmission started.

072:37:26

17:26:26

21-May-69

TV transmission ended.

072:54:42

17:43:42

21-May-69

Lunar orbit insertion ignition.

075:55:54.0

20:44:54

21-May-69

Lunar orbit insertion cutoff.

076:01:50.1

20:50:50

21-May-69

Lunar surface observations.

076:30

21:19

21-May-69

S-IVB closest approach to lunar surface.

078:51:03.6

23:40:03

21-May-69

Lunar orbit circularization ignition.

080:25:08.1

01:14:08

22-May-69

Lunar orbit circularization cutoff.

080:25:22.0

01:14:22

22-May-69

TV transmission started.

080:44:40

01:33:40

22-May-69

Lunar surface observations.

080:50

01:39

22-May-69

TV transmission ended.

081:13:49

02:02:49

22-May-69

LM cabin pressurized.

081:30

02:19

22-May-69

Transfer to LM power and systems checked.

081:55

02:44

22-May-69

Transfer to LM power. Systems tested.

082:40

03:29

22-May-69

Transfer to CM, hatch and tunnel closed.

084:30

05:19

22-May-69

CDR and LMP entered LM to activate systems.

095:02

15:51

22-May-69

Landing gear deployed.

098:00

18:49

22-May-69

CSM/LM undocked.

098:11:57

19:00:57

22-May-69

TV transmission started.

098:29:20

19:18:20

22-May-69

CSM/LM separation maneuver ignition.

098:47:17.4

19:36:17

22-May-69

CSM/LM separation maneuver cutoff.

098:47:25.7

19:36:25

22-May-69

TV transmission ended.

098:49:30

19:38:30

22-May-69

CSM rendezvous radar transponder anomaly.

098:51:54

19:40:54

22-May-69

LM system checks.

099:00

19:49

22-May-69

Descent orbit insertion ignition (SPS).

099:46:01.6

20:35:01

22-May-69

Descent orbit insertion cutoff.

099:46:29.0

20:35:29

22-May-69

LM oriented for radar overpass test.

100:32:00

21:21:00

22-May-69

LM acquisition of radar beam.

100:32:22

21:21:22

22-May-69

LM near-lunar-surface activity.

100:40

21:29

22-May-69

LM closest approach to lunar surface.

100:41:43

21:30:43

22-May-69

Phasing maneuver ignition.

100:58:25.93

21:47:25

22-May-69

Phasing maneuver cutoff.

100:59:05.88

21:48:05

22-May-69

Anomalous motion of LM started.

102:44:49

23:33:49

22 May- 69

LM in rapid roll.

102:45:12

23:34:12

22 May -69

LM ascent stage/descent stage separated.

102:45:16.9

23:34:16

22-May-69

LM ascent stage anomalous motion under control.

102:45:25

23:34:25

22 May-69

Ascent orbit insertion ignition

102:55:02.13

23:44:02

22-May-69

Ascent orbit insertion cutoff.

102:55:17.68

23:44:17

22-May-69

Coelliptic sequence initiation ignition.

103:45:55.3

00:34:55

23-May-69

Coelliptic sequence initiation cutoff.

103:46:22.6

00:35:22

23-May-69

Constant differential height maneuver ignition.

104:43:53.28

01:32:53

23-May-69

Constant differential height maneuver cutoff.

104:43:54.93

01:32:54

23-May-69

Terminal phase initiation ignition.

105:22:55.58

02:11:55

23-May-69

Terminal phase initiation cutoff.

105:23:12.08

02:12:12

23-May-69

Midcourse correction (lunar orbit).

105:37:56

02:26:56

23-May-69

Midcourse correction (lunar orbit).

105:52:56

02:41:56

23-May-69

Braking maneuver.

106:05:49

02:54:49

23-May-69

CSM/LM docked.

106:22:02

03:11:02

23-May-69

CDR and LMP entered CM.

106:42

03:31

23-May-69

LM closeout activities started.

107:20

04:09

23-May-69

LM ascent stage jettisoned.

108:24:36

05:13:36

23-May-69

LM separation maneuver ignition.

108:43:23.3

05:32:23

23-May-69

LM separation maneuver cutoff.

108:43:29.8

05:32:29

23-May-69

LM ascent propulsion system ignition.

108:52:05.5

05:41:05

23-May-69

LM ascent propulsion system depletion.

108:56.14.5

05:45:14

23-May-69

Terminator-to-terminator strip photographs.

119:20

16:09

23-May-69

Orbital navigation and landmark tracking.

124:30

21:19

23-May-69

Orbital navigation and landmark tracking.

128:00

00:49

24-May-69

TV transmission started.

132:07:12

04:56:12

24-May-69

TV transmission ended.

132:31:24

05:20:24

24-May-69

Target of opportunity photography.

133:00

05:49

24-May-69

Target of opportunity and strip photography.

134:40

07:29

24-May-69

Transearth injection ignition (SPS).

137:36:28.9

10:25:28

24-May-69

Transearth injection cutoff.

137:39:13.7

10:28:13

24-May-69

TV transmission started.

137:50:51

10:39:51

24-May-69

TV transmission ended.

138:33:54

11:22:54

24-May-69

TV transmission started.

139:30:16

12:19:16

24-May-69

TV transmission ended.

139:37:11

12:26:11

24-May-69

TV transmission started.

147:23:00

20:12:00

24-May-69

TV transmission ended.

147:34:25

20:23:25

24-May-69

TV transmission started.

152:29:19

01:18:19

25-May-69

TV transmission ended.

152:58:24

01:47:24

25-May-69

CSM S-band high-gain reflectivity test.

168:00

16:49

25-May-69

TV transmission started.

173:27:17

22:16:17

25-May-69

TV transmission ended.

173:37:39

22:26:39

25-May-69

TV transmission started.

186:51:49

11:40:49

26-May-69

TV transmission ended.

187:03:42

11:52:42

26-May-69

Midcourse correction ignition.

188:49:58.0

13:38:58

26-May-69

Midcourse correction cutoff.

188:50:04.7

13:39:04

26-May-69

Maneuver to entry attitude.

189:40

14:29

26-May-69

CM/SM separation.

191:33:26

16:22:26

26-May-69

Entry.

191:48:54.5

16:37:54

26-May-69

Communication blackout started.

191:49:12

16:38:12

26-May-69

Maximum entry g force (6.78 g).

191:50:14

16:39:14

26-May-69

Visual contact with CM established by recovery forces.

191:51

16:40

26-May-69

Radar contact with CM established by recovery ship.

191:52

16:41

26-May-69

Communication blackout ended.

191:53:40

16:42:40

26-May-69

Drogue parachute deployed

191:57:18.0

16:46:18

26-May-69

Main parachute deployed.

191:58:05

16:47:05

26-May-69

Splashdown (went to apex-up).

192:03:23

16:52:23

26-May-69

Flotation collar inflated.

192:21

17:10

26-May-69

CM hatch opened.

192:28

17:17

26-May-69

Crew in life raft.

192:31

17:20

26-May-69

Crew aboard recovery helicopter.

192:37

17:26

26-May-69

Crew aboard recovery ship.

192:42

17:31

26-May-69

CM aboard recovery ship.

193:39

18:28

26-May-69

CM at Ford Island, Hawaii.

 

 

31-May-69

CM deactivation started.

313:11

18:00

31-May-69

CM deactivation completed

353:07

05:56

03-Jun-69

CM arrived in Long Beach, CA

381:26

10:15

04-Jun-69

CM arrived at contractor’s facility in Downey, CA

 

 

04-Jun-69

 

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