Filter rows in time series

Hello everyone.
I need some advice to solve the following problem.
In the attached table I would like to delete the rows highlighted in red.
The data is a time series that goes from day 295 to 302.
of day 302 I only need the first row relating to hour 0, I don’t need the other 22 rows.

Thank you for any answers.
SP
es1.xlsx (15.4 KB)