64 bit hexadecimal AS Date in SQL

I am loading a Qlikview CalData PGO XML file into a SQL table. Dates in this XML are stored as a 64 bit HEX string and I need to convert it to a date. How do I do that? ### Example 40e58f2c4153d0f9 should be converted to 18/11/2020 09:11:29 I have seen some sample code within qlikview, which is

daystart(date($(HEX64CONVERT(ToBeDeleted))))