array filling same information

I'm not doing something right but I can not figure out what is happening. In cell c2 I type in =Transpose(dates) and turn to an array. Grab the corner, drag right and I keep keeping the same date instead going up 1 month. This is the dates formula - "=OFFSET(Sheet1!$A$1,COUNTA(Sheet1!$A$1:$A$65389)-23,0,24,1)"

My results should be c2 is Jan 14, d2 is Feb 14, d3 is Mar 14, etc. Please set straight. Thank you for your time and knowledge.

Thanks
Michelle