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Full moons are the only time you can evolve Ursaring into Ursaluna. Use this tracker to schedule evolution windows. Since timezones can be tricky, all times are listed in UTC. In order to evolve Ursaluna, you must do so during the full moon window and the in-game night cycle has to be active. This page uses Meeus-based lunar phase calculations to forecast the next 12 full moons with sub-hour precision. It can be used worldwide, but remember to convert UTC to your local time.
by FerryNicee