Blue skies, with moon shine evening.
The moon is the vagabond's compass.
Even on a sun shine evening.
That way, as he travels he knows he has a constant companion. That's always going to keep him company and far away from the enemies snare.
We all know, the woman on the moon. Has a soft spot for her wandering vagabonds. Even though the sun hasn't set yet. She's his eyes until his compass can set. She's his beacon in the storm.