Kathmandu: Thousands of people gathered at the heart of Kathmandu on Sunday to celebrate the Holi festival that marks the advent of spring in Nepal. Widely known as the Hindu festival of colours, the celebration has cultural and religious significance.Kathmandu: Thousands of people gathered at the heart of Kathmandu on Sunday to celebrate the Holi festival that marks the advent of spring in Nepal. Widely known as the Hindu festival of colours, the celebration has cultural and religious significance.