DELETE FROM activities_users WHERE date_modified > '2023-02-16 13:59:59' AND date_modified <=  '2023-03-01 13:59:59';
DELETE FROM activities_users WHERE date_modified > '2023-03-01 13:59:59' AND date_modified <=  '2023-03-16 13:59:59';
DELETE FROM activities_users WHERE date_modified > '2023-03-16 13:59:59' AND date_modified <=  '2023-04-01 13:59:59';
DELETE FROM activities_users WHERE date_modified > '2023-04-01 13:59:59' AND date_modified <=  '2023-04-16 13:59:59';
