From when the report was made for me, not from when it was approved or due (at Jomtien office).
Report submitted 28th December and approved 30th. Next report due 27th March 2022.
Jan = 31 days
Feb = 28 days
Mar = 27 days
Total in 2022 = 86 days, so 4 days required from December must be 28th, 29th, 30th and 31st.