When submit Self Assessment tax year

Sep 2020 arrive UK with student visa, Feb 2022 approved BNO visa, 13 Sep 2020 - June 2023 was full time student, I have overseas interest & dividend, UK wages as well, I wonder which tax year shall I submit Self Assessment?

Hi,
The UK tax year is 6 April to 5 April, so you will submit a return, if applicable, for income arising in the period for any tax year.
Thank you.