I am today on dry fast. during 4 months of monsoon we Hindus do dry feasting on alternative day. today is my 44 th dry fast(started on july 17 will end on 12 nov). and on non fasting day we eat one meal a day. so time between 2 meal is 47 to 49 hours 

 have done 100 hours dry fast 3 times. its hard given weather conditions here at Gujarat(India)