Why isn't Isai Galperin's Yahrzeit Exact?

We do not know the exact date of death of Isai Galperin. According to Jewish tradition, if the exact date of death is not known, the yahrzeit of a person can be observed on any day, as long as it is that same day every year. Since that is the case, we observe the yahrzeit of Isai Galperin on 23 Av. If you know the exact date of death of Isai Galperin, contact us via the contact page. Be sure to include the url: https://eachofushasaname.org/person/1475/Isai_Galperin.html