Lets re-check weather on both days,
Saturday: Partly cloudy in the morning, then clear. High of 24C. Winds from the North at 10 to 15 km/h shifting to the WNW in the afternoon.
Sunday:Clear in the morning, then partly cloudy. High of 24C. Winds from the NNW at 10 to 15 km/h shifting to the WNW in the afternoon.
Difference is that on Saturday, its cloudy first then clear and vice versa on Sunday. Also on Friday, its shiny, so it gives impression that saturday is more safe. But again, both days say "Partially Cloudy".
So...