I had meant to do this on each day to correspond with the Calendar. I totally forgot until just now, realising that I had missed a day. So here's the entry that was supposed to be for Sunday May 1st.
This day is otherwise known in English as Holocaust Day or Holocaust Remembrance Day. It is observed as Israel's commemoration for the millions of Jews who passed during the Holocaust and has been a national and public holiday since it's inception in 1953.
At 10am a siren sounds for two minutes at which time people stop what they are doing, stand at attention to pay silent tribute for those who died.