RIYADH: Saudi Arabia will mark its 90th National Day with a huge air show involving 60 military and civilian aircraft. The airshow, accompanied by fireworks, will take place as part of a series of events planned by the General Entertainment Authority (GEA) for national day celebrations.  The event will be broadcast on Sept. 23 on the Saudi TV Channel at 4 p.m. local time.  The GEA also launched an initiative called “We sing to our country” where the audience will participate with a hashtag and a personal video of singing the national anthem.  Selected videos will be used to produce a comprehensive artwork reflecting the spirit of national participation.