The queen surpassed King Bhumibol Adulyadej of Thailand's 25,694 day reign on Sunday, but was this enough to earn her the top spot?
The event has been strictly-orchestrated by the military regime that seized power in 2014.
Prime minister stresses that the government is working as normal with a regent in place until the crown prince assumes the throne.
Crown Prince Maha Vajiralongkorn wants to mourn with the people before assuming the monarchy after King Bhumibol Adulyadej's death.
King Bhumibol's long-anticipated passing has raised questions about the suitability of his heir.