I usually wean when it is convenient for me... and sometimes that is on the spur of the moment. We normally wean over a period of time , as we have 8 pastures and it is impossible to gather and sort them all in one day.I think there is something to the theory of weaning by the moon phases as I know some ranchers who believe this 100% and would never wean on any other day other than what phase the moon is at. I wish I could be that organized!! I have noticed that some times the cows hardly notice their calves gone and after a day without them, are out grazing again. I have seen other times when they go simply crazy, and smash fences, gates etc to find their calves.
I don't know anything about this moon stuff, but if you know anyone who works in the ER in a hospital, they dread full moons. Most hospitals here have almost double staff working on full moons as there will be more than twice as many people show up. In big cities, they say there are more than double attempted suicides, domestic abuse cases, knife injuries etc. They say that full moons bring all the crazys out to play..... any one got any theory's on this?