thanks rcheesley
I don`t know if what I made is correct or not?
I made upgrade to php from 7.4 to 8.0 for one week
when I write
sudo nano /etc/php/7.4/apache2/php.ini
I found the nano file for php 7.4 and the date.timezone setting correctly
and, when write
sudo nano /etc/php/8.0/apache2/php.ini
I found another file for php 8 but the data.timezone not written