Your cell was made on 2021-Apr-01.
Decode as follows:
Character#1: 9, A, B: 2019, 2020, 2021
Character#2: 1-9: Jan-Sep; A-C: Oct-Dec
Character#3: 1-9: Day 1-9; A-V: Day 10-31
Works on most cells from EVE, Ganfeng, CALb, etc.
Catl cell might have 001 in the front, e.g. 001B9C... So if we ignore...