I can't like the comment enough. I did months of night shift in Australia. Usually 7pm - 7am but it always went on later by the time I'd filled the bowser up for the evening, changed wearing parts, greased up etc. I never really slept well enough during the day to work all night so I'd park up at around 5am for a quick 20 minute snooze then I'd be fine again. That's how they did 2,000 hours/year on tractors running from wheat harvest in November through to planting in June. Very efficient working & easier with a bigger farm where you've got a few others working nights too - you can have a foreman keeping them all going. As above, it's not like other jobs don't have shift work. It would be harder to do here but I've done it a few times in 2012 to get the drilling finished. Always choose fields away from houses and have an operator mature enough to be self reliant and know when to stop. As long as your operators communicate the problems get sorted. Some jobs won't go at night like combining or drilling into chopped straw where the dew stops it going through the machine. Others like spraying are better done at night when the wind is lighter. I did 40,000 acres of stubble desiccation at night - during the day it was too windy and 38 oC in New South Wales which would have evaporated the spray water before it had hit the intended target.