2025 Calendar With Moon Phases. A major lunar standstill occurs every 18.6 years, when the moon rises and sets at a more northerly and southerly place along the horizon than usual, according to a. Surgical operations are generally recommended during the waning moon, because.
For optimal auroral viewing, the moon may not disturb because light from the moon can be very bright which causes faint aurora to be. January february march april may june july august.