public static Date sqlDateOfEpochDay(long epochDay){
        return Date.valueOf(dateOfEpochDay(epochDay));
    }
Obtains an instance of sql.Date from the number of days since the epoch.
This returns a Date with the specified epoch-of-day.
@param epochDay the number of days from epoch
@return the date, not null
src/main/java/org/replicadb/time/Conversions.java