Complex sentence: On 14 October 2014, Union J revealed the name of the track via Twitter and its premiere is going to take place on Capital on 15 October 2014 at 8 a.m BST.
Split into simpler sentences: On 14 October 2014, Union J revealed the name of the track via Twitter. The track premiered on Capital on 15 October 2014 at 8 a.m BST.