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On April 20 in Space History

1935 April 20 - .
1938 April 20 - . Launch Site: Roswell. LV Family: Goddard. Launch Vehicle: Goddard L-C.
1944 April 20 - . Launch Site: Heidelager. Launch Vehicle: V-2. FAILURE: Airburst.
1945 April 20 - .
1950 April 20 - . Launch Site: White Sands. LV Family: Nike Ajax. Launch Vehicle: Nike-484.
1951 April 20 - .
1954 April 20 - . Launch Site: Kapustin Yar. Launch Vehicle: R-11.
1955 April 20 - .
1955 April 20 - . 06:51 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC6. Launch Vehicle: Redstone. FAILURE: Guidance system malfunction at 310 sec due to air pressure loss. ST-80 lateral guidance only..
1957 April 20 - . 04:33 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17B. LV Family: Thor. Launch Vehicle: Thor DM-18. FAILURE: Console wiring error resulted in erroneous tracking indication; destroyed by range safety.. Failed Stage: G.
1959 April 20 - .
1959 April 20 - . 15:30 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25A. LV Family: Polaris. Launch Vehicle: Polaris AX.
1960 April 20 - . Launch Site: Santa Barbara Channel DZ. Launch Pad: EAFB. Launch Platform: F-104. LV Family: Deacon. Launch Vehicle: ALSOR. FAILURE: Failure.
1961 April 20 - .
1961 April 20 - . 03:46 GMT - . Launch Site: Salto di Quirra. LV Family: Asp. Launch Vehicle: Nike Asp.
1961 April 20 - . 18:39 GMT - . Launch Site: Salto di Quirra. LV Family: Asp. Launch Vehicle: Nike Asp.
1961 April 20 - . 18:43 GMT - . Launch Site: Salto di Quirra. LV Family: Asp. Launch Vehicle: Nike Asp.
1962 April 20 - . Launch Vehicle: N1.
1962 April 20 - . Launch Site: Baikonur. LV Family: R-9. Launch Vehicle: R-9A. FAILURE: Failure.
1962 April 20 - . 19:26 GMT - . Launch Site: Edwards. Launch Complex: Mud Lake DZ. Launch Pad: Edwards RW04/22. Launch Platform: NB-52 008.
1963 April 20 - .
1963 April 20 - . Launch Site: Wallops Island. LV Family: Sergeant. Launch Vehicle: Shotput.
1963 April 20 - . 10:01 GMT - . Launch Site: Hammaguira. Launch Complex: Hammaguira Blandine. Launch Vehicle: Veronique.
1964 April 20 - .
1964 April 20 - . Launch Site: Whiteman AFB. LV Family: Minuteman. Launch Vehicle: Minuteman 1B.
1964 April 20 - . Launch Site: Ile du Levant. Launch Pad: CERES. Launch Vehicle: Agate.
1964 April 20 - . 08:08 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. LV Family: R-7. Launch Vehicle: Molniya 8K78. FAILURE: Power failure caused upper stage shutdown at T+340 seconds.. Failed Stage: U.
1964 April 20 - . 16:30 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 625. LV Family: Polaris. Launch Vehicle: Polaris A2.
1964 April 20 - . 17:00 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 625. LV Family: Polaris. Launch Vehicle: Polaris A2.
1965 April 20 - . Launch Site: Lincoln AFB. LV Family: Atlas. Launch Vehicle: Atlas F.
1965 April 20 - . 15:40 GMT - . Launch Site: White Sands. Launch Complex: White Sands LC35. LV Family: Aerobee. Launch Vehicle: Aerobee 150.
1966 April 20 - .
1966 April 20 - . 02:30 GMT - . Launch Site: Woomera. Launch Complex: Woomera LA2. Launch Pad: LA2 SL. LV Family: Skylark. Launch Vehicle: Skylark 2.
1966 April 20 - . 08:44 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg 395-B. LV Family: Titan. Launch Vehicle: Titan II.
1966 April 20 - . 10:48 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC31. LV Family: R-7. Launch Vehicle: Vostok 8A92.
1966 April 20 - . 12:05 GMT - . Launch Site: Kagoshima. LV Family: Kappa. Launch Vehicle: Kappa 8.
1967 April 20 - .
1967 April 20 - . 01:35 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC3E. LV Family: Atlas. Launch Vehicle: Atlas SLV-3.
1967 April 20 - . 11:21 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC2E. LV Family: Thor. Launch Vehicle: Thor Delta E.
1967 April 20 - . 17:32 GMT - . Launch Site: Wallops Island. LV Family: Deacon. Launch Vehicle: Nike Cajun. FAILURE: Failure.
1967 April 20 - . 22:36 GMT - . Launch Site: Woomera. Launch Complex: Woomera LA2. Launch Pad: LA2 SL. LV Family: Skylark. Launch Vehicle: Skylark 3.
1968 April 20 - .
1968 April 20 - . 10:30 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC31. LV Family: R-7. Launch Vehicle: Voskhod 11A57.
1968 April 20 - . 17:38 GMT - . Launch Site: Wallops Island. Launch Complex: Wallops Island LA2. Launch Pad: LA2A?. LV Family: Astrobee. Launch Vehicle: Astrobee 1500.
1969 April 20 - . 04:15 GMT - . Launch Site: White Sands. Launch Vehicle: Super Loki.
1969 April 20 - . 13:04 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. Launch Vehicle: MR-12.
1969 April 20 - . 15:24 GMT - . Launch Site: Kapustin Yar. Launch Complex: Kapustin Yar V-2. Launch Vehicle: MR-12.
1970 April 20 - . Launch Site: Baikonur. Launch Complex: Baikonur LC162/36. LV Family: R-36. Launch Vehicle: R-36 8K67.
1970 April 20 - . Launch Site: Biscarosse. Launch Complex: Biscarosse BLB. LV Family: MSBS. Launch Vehicle: SSBS S02.
1970 April 20 - . 17:00 GMT - . Launch Site: Cape Canaveral. LV Family: Deacon. Launch Vehicle: Cajun Dart.
1971 April 20 - .
1972 April 20 - . 00:00 GMT - . Launch Site: Fort Greely. LV Family: Deacon. Launch Vehicle: Rocketsonde.
1973 April 20 - . 23:47 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17B. LV Family: Thor. Launch Vehicle: Delta 1914.
1974 April 20 - . 20:53 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Molniya 8K78M.
1976 April 20 - . 20:08 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 656. LV Family: Polaris. Launch Vehicle: Poseidon C3.
1976 April 20 - . 20:09 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral ETR. Launch Platform: SSBN 656. LV Family: Polaris. Launch Vehicle: Poseidon C3.
1977 April 20 - . 09:00 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. Launch Pad: LC1 or LC31. LV Family: R-7. Launch Vehicle: Soyuz-U.
1977 April 20 - . 10:15 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17B. LV Family: Thor. Launch Vehicle: Delta 2914.
1978 April 20 - . 15:30 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz-U.
1979 April 20 - . Launch Site: Baikonur. Launch Complex: Baikonur LC81/24.
1979 April 20 - .
1979 April 20 - . Launch Site: Baikonur. Launch Complex: Baikonur LC81/24. LV Family: Proton. Launch Vehicle: Proton-K. FAILURE: Engines ignited but immediately shut down on launch pad. Booster could be reused with new payload.. Failed Stage: 1.
1979 April 20 - . 11:30 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz-U.
1981 April 20 - . 20:55 GMT - . Launch Site: Barking Sands. LV Family: Deacon. Launch Vehicle: Rocketsonde.
1982 April 20 - . 06:30 GMT - . Launch Site: Poker Flat. LV Family: Black Brant. Launch Vehicle: Black Brant X.
1983 April 20 - . 13:10 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. LV Family: R-7. Launch Vehicle: Soyuz-U.
1984 April 20 - . 21:07 GMT - . Launch Site: Barking Sands. LV Family: Deacon. Launch Vehicle: Rocketsonde.
1985 April 20 - . 07:50 GMT - . Launch Site: White Sands. LV Family: Black Brant. Launch Vehicle: Black Brant 8C.
1988 April 20 - . Launch Site: Balasore. LV Family: RH. Launch Vehicle: RH-200.
1988 April 20 - . 05:48 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC31. LV Family: R-7. Launch Vehicle: Vostok 8A92M.
1989 April 20 - . 18:29 GMT - . Launch Site: Plesetsk. LV Family: R-7. Launch Vehicle: Soyuz-U-PVB.
1990 April 20 - . 18:41 GMT - . Launch Site: Plesetsk. Launch Complex: Plesetsk LC133/3. Launch Pad: LC133/3?. LV Family: R-14. Launch Vehicle: Kosmos 11K65M.
1994 April 20 - . 02:10 GMT - . Launch Site: Ryori. LV Family: MT-135. Launch Vehicle: MT-135P.
1994 April 20 - .
1995 April 20 - .
1996 April 20 - . 22:36 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA2. LV Family: Ariane. Launch Vehicle: Ariane 42P.
1997 April 20 - .
1998 April 20 - .
2000 April 20 - .
2001 April 20 - .
2001 April 20 - .
2002 April 20 - .
2004 April 20 - . 16:57 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC2W. LV Family: Thor. Launch Vehicle: Delta 7920-10C.
2004 April 20 - . 17:30 GMT - . Launch Site: Plesetsk. LV Family: Topol'. Launch Vehicle: Topol'-M 15Zh55.
2006 April 20 - . 20:27 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC41. Launch Pad: SLC41. LV Family: Atlas V. Launch Vehicle: Atlas V 411.
2007 April 20 - .
2008 April 20 - .
2009 April 20 - . 01:15 GMT - . Launch Site: Sriharikota. Launch Complex: Sriharikota SLP. Launch Vehicle: PSLV.
2009 April 20 - . 08:16 GMT - . Launch Site: Kiritimati. Launch Pad: 0.0 N x 154.0 W. Launch Platform: Odyssey. LV Family: Zenit. Launch Vehicle: Zenit-3SL.
2011 April 20 - . 04:42 GMT - . Launch Site: Sriharikota. Launch Complex: Sriharikota PSLV. Launch Vehicle: PSLV.
2012 April 20 - . 12:50 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC31. LV Family: R-7. Launch Vehicle: Soyuz-U-PVB.
2017 April 20 - . 07:13 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC1. LV Family: R-7. Launch Vehicle: Soyuz-FG.
2017 April 20 - . 11:40 GMT - . Launch Site: Wenchang. Launch Complex: Wenchang LC201. LV Family: CZ-NGLV. Launch Vehicle: Chang Zheng 7.

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