Why isn't Siegfried Jakobson's Yahrzeit Exact?

We do not know the exact date of death of Siegfried Jakobson. 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 Siegfried Jakobson on 13 Tammuz. If you know the exact date of death of Siegfried Jakobson, contact us via the contact page. Be sure to include the url: https://eachofushasaname.org/person/2500/Siegfried_Jakobson.html