When did the anti-British uprising break out in Delhi?

In May 1857, 1 1, an anti-British uprising finally broke out in Delhi. The rebels killed most colonial officials in the capital and burned down the offices of the East India Company. All the British who survived escaped from Delhi. Many British people painted their faces black and put on Indian clothes. Many people died of hot weather and hardships on the way, and many people were killed by nearby villagers. Insurgents took control of downtown Delhi, raised the green flag of Mughal dynasty in Hongbao, pushed the 82-year-old last Mughal emperor to the throne, announced the restoration of Mughal empire, called on all Hindus and Muslims to unite under the banner of the emperor to carry out anti-British jihad, and set up a military and political management committee to issue various decrees.