SOVIET SPACE PROGRAM
Soyuz U | Progress 21
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May 7, 1984 at 22:47 UTC
▸ Flight profile›
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LAUNCH DETAILS
VEHICLE
Soyuz UAGENCY
Soviet Space ProgramLAUNCH PAD
31/6LAUNCH SITE
Baikonur Cosmodrome, Republic of KazakhstanCOUNTRY
RUS
LAUNCH TIME VERIFICATION
CONFIRMEDPrecision: Minute
LAUNCH LIBRARY 2 PRIMARY
API ID: 472db4b0-ab24-4dfb-92bf-818cd5ba4020
Reported date: May 7, 1984 at 22:47 UTC
Last synced: 11 minutes ago
This launch date and time are confirmed by the launch provider. Countdown is active.
LAUNCH MAP
PAD WEATHER
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PROGRESS 7K-TG — PROGRESS 21
Progress 21 (No.121)SERIAL
1FLIGHTS
Salyut 7DESTINATION
Single UseSTATUS
Progress 21 (Russian: u041fu0440u043eu0433u0440u0435u0441u0441 21), was a Progress spacecraft used to resupply the space station Salyut 7.
VEHICLE — Soyuz U →
MANUFACTURER
Russian Federal Space Agency (ROSCOSMOS)
FLIGHTS
714
SUCCESSES
694
SUCCESS RATE
97.2%
FREQUENTLY ASKED QUESTIONS
When is the Soyuz U | Progress 21 launch?
The Soyuz U | Progress 21 is scheduled for Monday, May 7, 1984 at 10:47 PM UTC. This is the NET (No Earlier Than) time and may be subject to change. Current status: SUCCESS.
What rocket is being used for Soyuz U | Progress 21?
The Soyuz U | Progress 21 mission uses the Soyuz U rocket, manufactured by Russian Federal Space Agency (ROSCOSMOS). The Soyuz U has flown 714 times with a 97.2% success rate.
Where is the Soyuz U | Progress 21 launching from?
The launch takes place from 31/6 at Baikonur Cosmodrome, Republic of Kazakhstan.
Who is launching Soyuz U | Progress 21?
The Soyuz U | Progress 21 is operated by Soviet Space Program.
Can I watch the Soyuz U | Progress 21 launch live?
Yes. Visit the launch detail page on Space Launch Live for embedded YouTube webcasts, replay videos, and links to live coverage from SpaceX, NASA, NASASpaceflight, and other channels.
LAUNCH TIMELINE
Mar 29, 2026 23:44 UTC
Launch added to tracker
Imported from Launch Library 2 API
Mar 29, 2026 23:44 UTC
Launch date set: May 7, 1984 at 22:47 UTC
NET (No Earlier Than) confirmed by Soviet Space Program
Mar 29, 2026 23:44 UTC
Launch completed successfully
Updated via Launch Library 2
LIVE DATA SOURCES
Last data sync: 11 minutes ago
●Launch Library 211 minutes ago
Launch ID: 472db4b0-ab24-4dfb-92bf-818cd5ba4020
●Open-Meteo Weather1 day ago
Pad weather at 46, 63.56
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Mission Profile
Soyuz U | Progress 21 was a Soyuz U mission operated by Soviet Space Program that lifted off from 31/6, Baikonur Cosmodrome, Republic of Kazakhstan on May 7, 1984. The launch was a success.