Question: What day was the launch of the 7th spacecraft bearing the name of the planet where Hibes Montes is found?

full_context: Document 1: Olympus Mons: Olympus Mons (/ əˌlɪmpəs ˈmɒnz, oʊ -, - ˈmɒns /; Latin for Mount Olympus) is a very large shield volcano on the planet Mars. By one measure, it has a height of nearly 25 km (13.6 mi or 72,000 ft). Olympus Mons is about two and a half times Mount Everest's height above sea level. It is the largest volcano, the tallest planetary mountain, and the second tallest mountain in the Solar System compared to Rheasilvia on Vesta. It is the youngest of the large volcanoes on Mars, having formed during Mars's Hesperian Period. It had been known to astronomers since the late 19th century as the albedo feature Nix Olympica (Latin for ``Olympic Snow ''). Its mountainous nature was suspected well before space probes confirmed its identity as a mountain.
Document 2: Galaxius Mons: Galaxius Mons is a group of mountains in the Cebrenia quadrangle of Mars, located at 34.76 North and 217.69 West. It is 22 km (13.7 miles) in diameter. The mountain range has a "classical albedo name". The term "Mons" is used for a mountain.
Document 3: Space Race: In 1953, Korolev was given the go-ahead to develop the R-7 Semyorka rocket, which represented a major advance from the German design. Although some of its components (notably boosters) still resembled the German G-4, the new rocket incorporated staged design, a completely new control system, and a new fuel. It was successfully tested on August 21, 1957 and became the world's first fully operational ICBM the following month. It would later be used to launch the first satellite into space, and derivatives would launch all piloted Soviet spacecraft.
Document 4: Erebus Montes: Erebus Montes is a group of mountains in the Diacria quadrangle of Mars, located at 35.66° North and 185.02° West. It is 811 km across and was named after an albedo feature at 26N, 182W.
Document 5: Mars 2M No.522: Mars 2M No.522 was launched at 10:33:00 UTC on 2 April 1969 atop a Proton-K 8K78K carrier rocket with a Blok D upper stage, flying from Baikonur Cosmodrome Site 81/24. One of the first stage engines caught fire almost immediately at liftoff. The remaining engines managed to compensate for about 30 seconds of flight, but the thrust section fire eventually resulted in loss of control. The Proton pitched over and began flying horizontally before ground controllers sent a manual shutoff command. The vehicle nosedived into the ground just outside the launch complex 41 seconds after launch. Subsequent examination found that a missing drain plug allowed nitrogen tetroxide to leak out and start a fire.
Document 6: Foton-M No.4: Foton-M No.4 was launched from the Baikonur Cosmodrome on 18 July 2014, atop a Soyuz-2-1a carrier rocket. The launch was completed successfully, with the satellite separating from its rocket and beginning data transmission to its controllers. However, after four orbits, it ceased responding to commands issued to it from the ground. As a consequence of this, the spacecraft did not perform an orbit-raising maneuver that had been scheduled to occur shortly after orbital insertion. Satellite control was regained on 26 July by which time some of the microgravity experiments had already begun. On 1 August the head of Roskosmos, Oleg Ostapenko, was quoted as saying that the satellite will fly its entire two-month mission as originally planned, despite the cancellation of the orbit-boosting maneuver. However, all of the experiments completed by 27 August, and the Russian space agency decided to return the spacecraft to Earth on 1 September, two weeks earlier than the original 15 September target landing date.
Document 7: Hibes Montes: Hibes Montes is a mountain range on the planet Mars. The name "Hibes Montes"is a classical albedo name. It has a diameter of . This was approved by International Astronomical Union in 1985.
Document 8: Mars Orbiter Mission: The Mars Orbiter Mission probe lifted - off from the First Launch Pad at Satish Dhawan Space Centre (Sriharikota Range SHAR), Andhra Pradesh, using a Polar Satellite Launch Vehicle (PSLV) rocket C25 at 09: 08 UTC on 5 November 2013. The launch window was approximately 20 days long and started on 28 October 2013. The MOM probe spent about a month in Earth orbit, where it made a series of seven apogee - raising orbital manoeuvres before trans - Mars injection on 30 November 2013 (UTC). After a 298 - day transit to Mars, it was successfully inserted into Mars orbit on 24 September 2014.
Document 9: Kosmos 176: A Kosmos-2I 63SM carrier rocket was used to launch Kosmos 176 from Site 133/1 at Plesetsk Cosmodrome. The launch occurred at 17:00 UTC on 12 September 1967, and resulted in Kosmos 176's successful deployment into Low earth orbit.
Document 10: Kosmos 173: A Kosmos-2I 63SM carrier rocket was used to launch Kosmos 173 from Site 133/1 at Plesetsk Cosmodrome. The launch occurred at 04:59:49 UTC on 24 August 1967, and resulted in Kosmos 173's successful deployment into low earth orbit.
Document 11: Hellas Montes: Hellas Montes is a mountain range on the planet Mars. This group of mountains are located along the western rim of the giant Hellas Basin. It has a diameter of 153.00 km. This mountain range was approved in 1991.
Document 12: Mars 7: Mars 7 was launched by a Proton-K carrier rocket with a Blok D upper stage, flying from Baikonur Cosmodrome Site 81/24. The launch occurred at 17:00:17 UTC on 9 August 1973, with the first three stages placing the spacecraft and upper stage into a low Earth parking orbit before the Blok D fired to propel Mars 7 into heliocentric orbit bound for Mars. The spacecraft performed a course correction on 16 August 1973.
Document 13: Geryon Montes: Geryon Montes is a mountain range on the planet Mars. The name "Geryon Montes" is a classical albedo name. It has a diameter of . This mountain range was approved by International Astronomical Union in 1991.
Document 14: Australe Montes: Australe Montes is a mountain on the planet Mars. The name "Australe Montes" is a classical albedo name. It has a diameter of . This was approved by International Astronomical Union in 2003.
Document 15: Euripus Mons: Euripus Mons is a mountain on the planet Mars. The name "Euripus Mons" is a classical albedo name. It has a diameter of . This was approved by International Astronomical Union in 2003. It is just east of Hellas Basin and is surrounded by debris flow.
ground_truth: 9 August 1973
sub_queries: Where is Hibes Montes found? Answer: Mars
What day was Mars 7 launched? Answer: 9 August 1973