(Btw, why 30 August, when August has 31 days

)
Seems like a contrived issue. Why does it have to be any particular day, never mind the last day of the month?
There were 3 matches for "Ihor" because there were the following entries: {Ihor, Ihor Bortnikov, Ihor Hladkiy}
I don't like how they're revealing names in a public spreadsheet though. That's pretty bad.
https://drive.google.com/file/d/19eLZcQu_t38PFcfhuYHu2_Ht71uFjMpS/view