Carnival has arrived in Cologne. Dubbed Germany’s ‘fifth season’ by locals, the party starts every year on 11 November at 11:11 am local time. It typically stretches until Ash Wednesday in February or March, when colourful parades spill into the streets. Thousands of revellers have also descended into the roads in Düsseldorf and Mainz. Watch: Rio Carnival’s colourful parade makes a welcome return to BrazilNotting Hill Carnival returns to the streets of London for first time since pandemic began According to the local police, there were heavy crowds in Cologne’s main party district, with 1100 o…