Kathmandu, August 20 As many as 43 representatives of 13 metropolitan cities from six countries will be participating in Indra Jatra this year, in a bid to promote Visit Nepal-2020 campaign. Kathmandu Metropolitan City, today, confirmed that mayors and officials of various metropolitan cities from countries including the USA, China, India, Japan, Bangladesh and Bhutan will be joining the eight-day festival. KMC has established sisterly relation with all the municipalities that will join the jatra, which will be organised at Basantapur, a World Heritage Site, on September 13. The guests will arrive in Nepal on September 12 and will return on September 16. KMC had started sending invitations to sisterly metropolitan cities before seven months. KMC Mayor Bidhya Sundar Shakya said the event would strengthen relationship with other cities and help to promote culture and festivals in the world. Indra Jatra is annually celebrated with much fanfare by worshipping Lord Indra, the Hindu God of rain.