In the last 4 years since I moved to my current place we noticed the farmers in the nearby field always do their plowing, sowing and straw collection at night, using the lights on their tractor rather during the light hours. Harvesting seems to be a bit earlier but still close to sundown.
It doesn't appear they have such a big field that they start in the morning and only get to this side late.
The neighbours have many theories, ranging from the driver being a vampire to the farmers just fucking with the village people.
Are there any agricultural reasons for them doing this? Barring that, what are some other outlandish theories I can enter the pool of conspiracies?