Will irregular sleeping times make dieting harder?!

I never get up and go to bed at the same time everyday would this interfer with dieting!? I still eat 1200 cals a day and my meals and snack are spaced out well but sometimes my first meal is not until midday because Iv only woken up at that time!? And last meal/snack can be at midnight sometimes!.Www@Answer-Health@Com

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