https://techcrunch.com/2022/08/09/whatsapp-extends-time-limit-to-delete-a-message-to-60-hours/

WhatsApp now allows you to delete a message for up to two days and 12 hours (60 hours in total), so you can remove an accidentally sent chat even after hours. Previously, this limit was 1 hour, 8 minutes, and 16 seconds — yep, there were seconds involved.

The company’s tweet about this feature just mentioned “little over two days,” but didn’t specify the 12-hour part.