Why isn't Nissen Samuelson's Yahrzeit Exact?

We do not know the exact date of death of Nissen Samuelson. 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 Nissen Samuelson on 18 Tammuz. If you know the exact date of death of Nissen Samuelson, contact us via the contact page. Be sure to include the url: https://eachofushasaname.org/person/5070/Nissen_Samuelson.html