2019 United Kingdom prorogation controversy

On 27 or 28 August 2019, the prime minister of the United Kingdom Boris Johnson advised Queen Elizabeth II to prorogue Parliament from a date between 9 and 12 September 2019 until the State Opening of Parliament on 14 October 2019. As a result, Parliament was suspended from 9 September until 24 September, when the prorogation was ruled unlawful by the Supreme Court.