I notice you have marked one of your posts Solved.
Considering that the screen shot included in that post shows these results:

I question how you interpret this as being "Solved."
For Monday, you have a start time of 21:00 and a finish time of 06:00 (the next day). The difference here is nine hours, which should be displayed as 1.00 (hours) of overtime and 8.00 (hours) of Standard time.
In the screen shot, it displays as 0.00 (hours) of overtime and (negative) 15.00 (hours) of standard time.
What has probably occurred here is that you entered both time values on the same day. ALL time (of day) values displayed in Numbers are the time part of a Date & Time value marking an instant in time. If you enter only the Time part, Numbers automatically sets the Date part to the day of the entry being made. If both Monday values were entered as time (without the date), both times have been entered wth the same date, and the subtraction of 'today' at 22:00 from 'today' at 06:00 returns a duration of -15 hours.
The formulas I provided took NO account of the date on which the times were entered. The original formulas in columns D and E Likely did account for that possibility. That is the reason I asked to see the original formulas in cells D2 and E2; formulas which, as yet, you have not revealed.
Your most recent screen shots do display formulas in the Formula Editor, but they, as you note in the following post, are "the same as you (I) posted" which is not what I requested. In addition, the displays include only the beginnings of those formulas; not particularly useful information when trying to analyze the full formula.
Tuesday (row 3) of your screenshot also shows an error. The start time on this row is 22:00, the finish time is 06:00. The duration from 22:00 to 06:00 is 8 hours. I have no idea how your table gets from a duration of 8 hours from start to finish to 8 hours of standard time AND 2.50 hours of overtime.
While those two rows are providing results with errors, the rest are providing the correct results for Wednesday to Friday, where start and finish times are the same as those on Tuesday. I am hoping this means you have not yet altered the formulas in these rows.
IF that IS the case, please:
- COPY the full, original formula in Column D of the Thursday row (row 5) and paste it into a reply here.
- COPY the full, original formula from Column E in the same row (row 5) and paste that below the formula requeted above.
Regards,
Barry