Question: Yiannis Zisimides, is a retired Cypriot athlete who competed in the sprinting events, and last represented his country at the 2000 Summer Olympic Games, officially known as the Games of the XXVII Olympiad, held during which time span?
Context: Antonakis Andreou "(Greek: Αντωνάκης Ανδρεου)" often called Antonis Andreou, is a Cypriot sports shooter.  He has represented Cyprus in the 1996 Summer Olympic Games ranking 9th and the 2000 Summer Olympic Games ranking 8th.  He represented Cyprus at the 2012 Olympic Games in London, finishing in 22nd. The 1952 Summer Olympics (Finnish: "Kesäolympialaiset 1952" ; Swedish: "Olympiska sommarspelen 1952" ), officially known as the Games of the XV Olympiad, were an international multi-sport event held in Helsinki, Finland, in 1952.  Helsinki had been earlier selected to host the 1940 Summer Olympics, which were cancelled due to World War II.  It is the northernmost city at which a summer Olympic Games have been held.  These were the first games to be held in a non-Indo-European language speaking country.  It was also the Olympic Games at which the most number of world records were broken until surpassed by the 2008 Summer Olympics in Beijing.  The Soviet Union, the People's Republic of China, Indonesia, Israel, Thailand, and Saarland made their Olympic debuts in Helsinki 1952. Scot Hollonbeck (born 1969) is an American wheelchair racer, who competed at the Olympic and Paralympic level.  At the 1996 Olympic Games, he placed second in the 1500m wheelchair racing event.  2000 Summer Olympic Games, he placed sixth in the 1500m wheelchair racing event.  At the 2004 Olympic Games, he finished 4th in the 1500m wheelchair racing event.  Men's 1500m wheelchair.  At the 1992 Olympic Games, he finished 5th in the 1500m wheelchair racing event.  Men's 1500m wheelchairHe competed in four consecutive Summer Olympic finals, winning one silver medal and Summer Paralympics from 1992 to 2004, winning a total of two gold and three silver medals. The 2008 Summer Olympic Games, officially known as the Games of the XXIX Olympiad () and commonly known as Beijing 2008, was a major international multi-sport event that took place in Beijing, China, from 7 to 24 August 2008.  A total of 10,942 athletes from 204 National Olympic Committees (NOCs) competed in 28 sports and 302 events (a total of one event more than the schedule of the 2004 Games).  China became the 22nd nation to host the Olympic Games and the 18th to hold a Summer Olympic Games.  It was the third time that the Summer Olympic Games were held in East Asia and Asia, after Tokyo, Japan, in 1964 and Seoul, South Korea, in 1988. The 2000 Summer Olympic Games, officially known as the Games of the XXVII Olympiad and commonly known as Sydney 2000 or the Millennium Olympic Games/Games of the New Millennium, were an international multi-sport event which was held between 15 September and 1 October 2000 in Sydney, New South Wales, Australia.  It was the second time that the Summer Olympics were held in Australia, and also the Southern Hemisphere, the first being in Melbourne, Victoria, in 1956. This is a list of host cities of the Olympic Games, both summer and winter, since the modern Olympics began in 1896.  Since then, summer games have usually but not always celebrated a four-year period known as an Olympiad.  There have been 28 Summer Olympic Games held in 23 cities, and 22 Winter Olympic Games held in 19 cities.  In addition, three summer and two winter editions of the Games were scheduled to take place but later cancelled due to war: Berlin (summer) in 1916; Tokyo/Helsinki (summer) and Sapporo/Garmisch-Partenkirchen (winter) in 1940; and London (summer) and Cortina d'Ampezzo, Italy (winter) in 1944.  The 1906 Summer Olympics were officially sanctioned and held in Athens.  However, in 1949, the International Olympic Committee (IOC), decided to unrecognize the 1906 Games.  Five cities have been chosen by the IOC to host upcoming Olympic Games: Pyeongchang for the 2018 Winter Olympics, Tokyo for the 2020 Summer Olympics, Beijing for the 2022 Winter Olympics, Paris for the 2024 Summer Olympics, and Los Angeles for the 2028 Summer Olympics. Konstantinos Pochanis (Greek: Κωνσταντίνος Ποχάνης , born 29 July 1973) is a retired Cypriot athlete who specialised in the 400 metres hurdles.  He represented his country at the 2000 Summer Olympics, as well as two World Championships. Yiannis Zisimides (Greek: Γιάννης Ζησιμίδης; born 17 August 1967) is a retired Cypriot athlete who competed in the sprinting events.  He represented his country at three Summer Olympics, in 1992, 1996 and 2000. Androula Sialou (; born 27 January 1973) is a retired Cypriot athlete who specialised in the 400 metres hurdles.  She represented her country at the 2004 Summer Olympics reaching the semifinals.  She is the Cypriot national record holder for the event with her personal best of 54.76 seconds. Monika Georgieva Gachevska (Bulgarian: Моника Георгиева Гачевска; born 30 January 1974 in Pleven) is a retired Bulgarian athlete who competed in the sprinting events.  She represented her country at three consecutive Olympic Games, starting in 1996, as well as three outdoor and three indoor World Championships.  Her biggest achievement is the bronze medal at the 1997 Summer Universiade.
Answer: 15 September and 1 October 2000