Granted Power: The difficulty class of a saving throw against any of your spells is increases by +2 DC when the moon is in the sky and clearly vis ible.

Moon Domain Spells
1 Detect Undead
2 *Moonbeam
3 Halt Undead
4 Dimension Door
5 Shadow Portal
6 Shadow Walk
7 Sunbeam
8 Sunburst
9 Gate