Relative died in America. I am in Israel. Cannot go to funeral because of corona. They might consult me about burial (where to did it ect.) When does ז’ ימי אבילות start? משעה שנודע לו או מהקבורה?
It is controversial when it starts, but if you are involved with the decision making etc. then it would wait until you are finished with the part that you are contributing to the arrangments of the burial, and then it would start.
Hamakom yinachem eschem btoch shar aveilei Tzion v’Yerushalayim.
Divrei Sofrim 23-42 and footnote, Poskim .