It's 27th of Rajab starting tonight. Don't know how to celebrate. But as 5 prayers were gifted this night to the Muslims that is a savior for Muslims from Hell, I think a better way is to offer nawafils this night. You can celebrate the way you like, cook some sweet or lighting candles (please don't use candles or extra lighting if your country has energy issues, don't waste energy). Offering prayers and Tasbeeh is a good way. Good for all!