The International Space Apps Challenge is an international hackathon that will take place over a 48 hour period in 50 cities on all seven continents over the weekend of 20-21 April 2013. The annual event is being organized in Kathmandu, Nepal by ICIMOD within the framework of SERVIR-Himalaya initiative supported by USAID and NASA in close collaboration with YoungInnovations, a local partner organization. The event will help build the capacity of Nepal’s youth tech community in the development of applications and tools related to earth observation and geo-ICT, particularly focused on mountain regions. A Call for Participation will be announced soon.