Keep the SAME wall-clock (y,m,d,h,m,s) but re-interpret it in the given numeric UTC offset (hours east of Greenwich, supports fractions). Returns a Date (correct instant) AND a formatted string like "Tue Oct 21 2025 11:03:00 GMT-0400".
Keep the SAME wall-clock (y,m,d,h,m,s) but re-interpret it in the given numeric UTC offset (hours east of Greenwich, supports fractions). Returns a Date (correct instant) AND a formatted string like "Tue Oct 21 2025 11:03:00 GMT-0400".