Firecrackers are now on sale in Oahu stores, but only for people who already purchased firecracker permits. The deadline to purchase permits was Friday, December 20. Firecrackers can only be set off on Oahu between 9 p.m. on New Year's Eve and 1 a.m. on New Year's Day.  No one under 18 may use firecrackers, even with adult supervision. All other fireworks, including paperless firecrackers, fountains and sparklers are illegal on Oahu. There are professional fireworks shows you can enjoy to ring in the New Year on Oahu.  They are at 9,10,11 p.m. and midnight at Kakaako Waterfront Park, at midnight from a barge 1,500 feet offshore from Waikiki Beach, fronting the Halekulani Hotel, and at midnight at the Ihilani Resort and Spa.