March 20th to March 2nd, 20231. The second diagnostic examination in Chengdu is the second diagnostic examination in senior three in Chengdu. According to Chengdu local treasure, the second diagnostic examination time in Chengdu was from March 20th to March 20th, 2023 at 2 1, and the language was March 20th at 9: 00-1:30. Mathematics is from 15 to 17 on March 20th, and comprehensive literature or comprehensive management is from 8: 00 to 1 1.30 on March 20th. English is March 2 1 from 15 to 17.