This flowering tree is called by many different names in different places, e.g. Royal Poinciana, Krishnachura, Gulmohar, Peacock Flower, Flame of the Forest, Malinche, and Tabachine. In Indonesia, it is called "flamboyan" or "bunga flamboyan" (delonix regia). Here it normally blooms between September and October during the seasonal change from the dry season to the rainy season.
Flamboyant is originally from Madagascar. More information about this flower can be found here.
I took these photos at Monumen Perjuangan Rakyat Jawa Barat plaza sometime ago.