Date of joining

Sir I joined Indian railway on 29 March 2014 as a trainee JE Electrical at kancharapar supervisor training school but my division is already allotted to Howrah.
After completing my training I was joined as a JE in Howrah division as on 01 April 2015,in my pay slip date of appointment is 01 April 2015. So please suggest me which one is my date of appointment.....

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