Contents: Chapters: 1 - Geographical & social conditions of Hanoi. Some about concepts, percepts & terminology. Review of some similar works. 2 - The royal / courts' festivities through historic materials. Some notes. 3 - Folk festivities in modern social life. The festivities of the Ung Thien communal long house; of Dong Da Hill; of God of Giong; of An Duong Vuong, BaTam and Dong Nhan temples; of Trieu Khuc & Luong Quy villages; of boat contest of Dam village. 4 - Some new festivities and festivities that imported from the West. 5 - Conclusions. Appendix.