Poskim don’t mention much of this anniversary in Halacha. Yet the reality is that in many Yeshivot and Kolelelim it isn’t kept and no restrictions are placed on performing Semachos as weddings etc. in these days. It also does not usually have those restrictions in non- religious institutions.
Rabbi
A. Bartfeld as revised by Horav Yaakov
Hirschman,
Horav Dovid Pam, Horav Aharon Miller, Horav Chanoch Ehrentreu and
Horav Kalman Ochs Shlit'a.