Complex sentence: The second edition was held from the 24th to the 27th October, 2013, and the third edition will be happening from the 30th of October to the 2nd of November, 2014.
Split into simpler sentences: The second edition was held from the 24th to 27th October, 2013. The third edition took place from the 30th of October to the 2nd of November, 2014.