On my phone, I have configured Digital Wellbeing to only allow me to use my RSS reader for 15 minutes per day. The timer resets at midnight. Last night I stopped work after midnight, and read some blogs to wind down. This evening, I discovered I'd effectively used today's allowance yesterday.
In a past life I used a timelogging tool to report what I'd worked on to my employer. It had a configurable “virtual midnight” feature which defaulted to 4am: work done before this time was considered to have happened the previous calender day. This was always super-buggy, but I came to realise the real bug is working late enough that it becomes an issue.
But, here we are again.