As you mentioned with another ticket - indeed, it seems we have timezone difference.
Can you please share problem URL and access details where you have added the conditional statement so I can check whats going wrong there.
*** Please make a FULL BACKUP of your database and website.***
I would also eventually need to request temporary access (WP-Admin and FTP) to your site. Preferably to a test site where the problem has been replicated if possible in order to be of better help and check if some configurations might need to be changed.
I have set the next reply to private which means only you and I have access to it.