Post Modified (Date:Time) Same for Major Post

Looks like something updated the database table with articles in it. If you did not do it manually, it was done by some code/custom plugin/theme.

Do you have any database backup so you could revert back on staging/test or try to import it into a custom database and check with phpMyAdmin or similar?

ChatGPT gives you a guide you on how to perform these actions:Reverting Database on Staging/Test Environment:

1. Create a Backup:
   • Before making any changes, ensure you have a recent backup of your production database.
2. Copy to Staging/Test:
   • Copy your production WordPress installation and database to your staging or test environment. This could involve duplicating files and importing the database.
3. Update Configuration:
   • Update the wp-config.php file in your staging/test environment to point to the copied database.
4. Testing:
   • Test your staging/test environment to ensure that it replicates the issue.

Importing into a Custom Database and Checking with phpMyAdmin:

1. Export Database:
   • Use the export feature in phpMyAdmin or a similar tool to export your WordPress database.
2. Create a Custom Database:
   • In phpMyAdmin, create a new empty database.
3. Import Data:
   • Import the exported SQL file into the new custom database.
4. Check Data:
   • In phpMyAdmin, browse the tables in the custom database, particularly the wp_posts table, and examine the modification date values.

Remember, when dealing with databases, it’s crucial to be cautious and have recent backups in case anything goes wrong. If you’re not comfortable with these tasks, consider seeking assistance from a developer or a technical expert to ensure a smooth process and prevent data loss.