Complex sentence: In Mar 2011 NTV announced it was to postpone service start from the planned start date of Sep 2011 due to delays with the train certification, this start date had moved to 2012 by Nov 2011.
Split into simpler sentences: In Mar 2011 NTV announced it was to postpone service start from the planned start date of Sep 2011 due to delays with the train certification. This start date had moved to 2012 by Nov 2011.