How do you cope with the shifts

[rodan]

M - morning (what hours?)

Typically around 6AM til' around lunchtime/early afternoon

A - afternoon (again, what hours)

Around lunchtime/early afternoon 'til 8/9/10PM ish.

D - day?

Yep. 9-5, or similar.

O - off?

Correct.

S - ?

'Sleep'. Means you have finished a night shift that morning.

N - night (hours?)

Whatever is left between the Morning and Afternoon shifts

Sorry to be so vague, but different units have different ideas about how it works.