Does ovulation happen at 60day cycle?

I would say that: if you are having 60 day cycles that they are anovulatory, that there is no ovulation occurring.

That would be: unusual. If a woman ovulates it usually occurs 14 days prior to her period. So if she had a 30 day cycle - it might be at day #16. If she had a 24 day cycle it might be at day #10. So, a woman with a regular cycle would ovulate once per each cycle.

Likely no: I agree with my colleagues who have addressed this question. It's likely that ovulation typically occurs days #9-14 in a typical cycle. If you are having irregular cycles, then ovulation "could" occur at day #60, but if your cycles are that irregular, it would be impossible to tell unless you were constantly using ovulation predictor kits (which would be prohibitively expensive).

Ovulation: If it occurs, it would be once every monthly cycle.