I worked nights for 9 years, then went to days..
We have 7 shifts at the plant in a 24 hour period, ready,
We have 3 8 hour shifts:
6am to 2pm
2pm to 10pm
10pm to 6am
4 12 hour shifts, A,B,C and D shifts,
A and C shift work one shift, B and D shift work another,
A and B shifts are days, C and D shifts are nights.
Example:
Monday Morning: A shift comes on works 6am to 6pm, then C shift comes on and works 6pm to 6am,
Tuesday, B shift comes on 6am to 6pm, then D shift from 6pm to 6am, Repeat for Wednesday,
Thursday and Friday: A and C shifts report,
Saturday, Sunday and Monday: B and D shifts report
Tuesday and Wednesday: A and C shifts report, this repeats itself.... I hated working those shifts.. Glad to go back to 8 hrs a couple years ago, but we still have 12 hour shifts, WAIT, it was worse in 98, you see we had all of the above PLUS 2 12 hour shifts for Maintiance, 3 12s on and 2 off, repeated itself, then they put us on the other 12 hour shifts and now we are back on 8 hour shifts, well kind of, you see we still are working 12 hour shifts plus weekends, but now I get my OT back, before on the 12 hour shifts, you did not get OT, that sucked...