somewhere between February 13-15It is observed on February 15.
i think it is penticost
It is celebrated on August 15.
Pentacost is the 50th day after Easter. The 40th day after Christmas is Feb. 2, the day of Christ's Presentation in the Temple.
There is no St. Gabrielle. If you mean St. Gabriel the Archangel, his feast day is September 29.