I was wondering if some people fast on Yom HaShoah or Yom HaZikaron. After all, these are somber days and hit close to home for many people. Do some people fast on these days? Why or why not?
Yom HaShoah falls on the 27th of Nissan. It is forbbiden to fast during the month of Nissan (Shulchan Aruch OC 429:2). I've never met anyone who fasts on that day, and I would question anyone who does.