Are you asking about the entrance time and graduation time of grade 20 college students? Undergraduate admission time: September 2020, graduation time: June 2024. College entrance examination time: September 2020, graduation time: June 2023. According to the official website of People's Republic of China (PRC) and the inquiry of the Ministry of Education of China, the general full-time undergraduate course lasts for four years, so he entered school in September 2020 and graduated in June 2024. Ordinary full-time college students study for three years, so they enter school in September 2020 and graduate in June 2023. Therefore, the enrollment time of Grade 20 undergraduates is September 2020 and the graduation time is June 2024. College entrance examination time: September 2020, graduation time: June 2023.