NO, no, no Some of the older farmer/ranchers around here swear by the moon. If you have a almanac they do to. I think it goes by the dark of the moon. Castrate during this cycle they bleed less. Light of the moon is not reccommended. Could have that backwards so do your DD as they say. Use to have a 2-cow ranch, never really cut many bulls into steers but did a ton of shoats.