Calculate time in excel

[JoeyGaspard]

I get a text report from our time keeping system that i dump into excel through a data connection and I need to calculate the total hours for a day, the problem is, some employees clock in and out for lunch, so there could be up to 4 punches per day per employee. I am trying to automate it so that it will subtract the clockin time from the lunch clock out time, and the lunch clock in from the end of the day clockout to give me total hours worked for the day. Example, if I have these 4 times:
7.82
12.60
13.02
16.66
I need to subtract 7.82 from 12.60 and 13.02 from 16.62, and then add the two numbers together for the total for the day. I have no problem doing this if everyone clocked 4 punches a day, but some clock 2 times, and others 4, just depends on whether they leave for lunch. I get the data with a date and time stamp, is there a way to do this either with vba or a formula? I need excel to recognize whether there are 2 or 4 punches so it will know what to subtract from what? Any help is greatly appreciated! Here is an example of what the data looks like:

19999	2021-04-05 07:49:19.000	CLARK	LEAH	07:49:19.000
19999	2021-04-05 12:36:11.000	CLARK	LEAH	12:36:11.000
19999	2021-04-05 13:01:25.000	CLARK	LEAH	13:01:25.000
19999	2021-04-05 16:39:43.000	CLARK	LEAH	16:39:43.000
19999	2021-04-06 07:46:02.000	CLARK	LEAH	07:46:02.000
19999	2021-04-06 12:30:33.000	CLARK	LEAH	12:30:33.000
19999	2021-04-06 13:06:53.000	CLARK	LEAH	13:06:53.000
19999	2021-04-06 16:46:06.000	CLARK	LEAH	16:46:06.000
19999	2021-04-07 07:55:45.000	CLARK	LEAH	07:55:45.000
19999	2021-04-07 11:38:46.000	CLARK	LEAH	11:38:46.000
19999	2021-04-07 12:10:14.000	CLARK	LEAH	12:10:14.000
19999	2021-04-07 16:30:03.000	CLARK	LEAH	16:30:03.000
19999	2021-04-08 07:50:41.000	CLARK	LEAH	07:50:41.000
19999	2021-04-08 16:34:03.000	CLARK	LEAH	16:34:03.000
19999	2021-04-09 07:18:18.000	CLARK	LEAH	07:18:18.000

I convert it 100 minute time also.

 

[Toadstool]

There's no indicator for Clockin/Clockout or which Employees are on the night shift.
I could come up with an even more convoluted formula which assumes that if the first clock was without a second for the same day then that's night shift staff, but it wouldn't work if you've monthly data and they clocked in 30th April and clocked out 1st May.

 

[JoeyGaspard]

There's no indicator for Clockin/Clockout or which Employees are on the night shift.
I could come up with an even more convoluted formula which assumes that if the first clock was without a second for the same day then that's night shift staff, but it wouldn't work if you've monthly data and they clocked in 30th April and clocked out 1st May.

Thank you so much for the reply, I may have it worked out, I will let you know and close this thread after I do some testing. Again, thank you so much!