As per the kwaja sera's words the last thing ruqu had eaten,tasted or drunk was adulterated actually.. So if the last thing was that milk,so surely she had taken it in night as it is unbelievable that being a pregnant lady where she should take some extra meal than usual for her child she actually spent the all day in hunger..Hence the celebration must took place in evening.. But also when Jalal went to meet jodha,was not in morning?? In fact her brothers also arrived in morning with the saffron..now where was the saffron kept all the day??finding that out can be a way out for jodha, and if when jalal went to meet jodha was morning, then surely jodha has to submit account what did she do all the morning to prove herself innocent..