Galadriel is described by Tolkien as having the power to perceive the desires and motivations in the hearts of others. In the film this is interpreted as being telepathic. She had the power to heal, create, protect and preserve although some of these powers were either due to or greatly enhanced by her possession of the Elfstone and Nenya, a ring of power. After the War of the Ring, Galadriel is described as casting down the walls of Dol Guldur and cleansing the Mirkwood. Technically this would be after the destruction of the ring and so would be after Nenya's power failed and gives us a good idea of Galadriel's innate power.
Falling on the 15th day of the first lunar month, Lantern Festival is the first significant feast after Spring Festival, so called because the most important activity during the night of the event is watching various wonderful Chinese lanterns.
Holi is celebrated at the approach of the vernal equinox, on the Phalguna Purnima (Full Moon). The festival date varies every year, per the Hindu calendar, and typically comes in March, sometimes February in the Gregorian Calendar.