If you take the details for the period from 01 March to 28/29 February, then you will remit the amount from April to March. This way, it becomes a complete financial year.
March salary is paid on April 7th, and the PF is to be remitted on 15 April. Therefore, your remittance details during the financial year will be calculated if you consider the PF period from 01 March to 28/29 February.