Hours & Holidays in Trinidad Service hours in Trinidad are every day from 8.30 am to 4.30 pm from Monday to Saturday, including the following holidays: Read More... 1st of January. Anniversary of the Triumph of the Revolution. Second Week of the first fortnight of January anniversary of the foundation of the town. And week of the Trinitarian culture. May 1st Workers' Day. June 24th San Juan parties. Carnivals. July 25th Carnival Spirituano. July 26th National Rebellion Day. October 10th beginning of the war of independence. December 28th release of Trinidad. (December 27th single night marathon in the world in greeting to date). December 31st End of year.