Wiccan Festival of Lights

The Wiccan Festival of Lights, also known as the Imbolc, is a Wiccan Sabbat that celebrates the end of winter and the beginning of spring. Wyatt Halliwell was born on this day in 2003 and Prue Halliwell was born on this day in 2007.

History
In 2003, on the day before the festival, an Aurora Borealis took place. The following day, magic vanished and according to Phoebe, Jupiter, Mars and Saturn were all in Gemini, which happened only every three hundred years. It was later revealed by Merrill that all these signs were part of a prophecy predicting the arrival of the Twice-Blessed Child. When Wyatt was born, magic was returned to the world. Prue Halliwell was born on the same day as her cousin Wyatt, making her a Twice Blessed Child as well. Magic once again vanished from the world until she was born. It's possible that the Aurora Borealis took place on the night before Prue was born, as it would make sense. However, Jupiter, Mars, and Saturn couldn't have been in Gemini since it hadn't been another three hundred years. It's unknown if the Wiccan Festival of Lights had been celebrated the night before Prue's birth too, but only one can theorize this possibility.

Notes and Trivia

 * The Wiccan Festival of Lights could be part of the Twice Blessed Prophecy as it had taken place twice in two different years (once in 2003, again in 2007), of the same day when the first and second Twice Blessed Children had been born. However this fact is unknown and only presumed.