To the OP, CherishNY
Yes. If you attend any Catholic Mass at 5:30 PM or 7:30 PM on Saturday evening, you have fulfilled your Sunday obligation.
The reason why some people hesitate on this is because under the old 1917 code of canon law, one needed a reason to attend Saturday evening. A person could not simply choose to go on Saturday as an option to Sunday. That no longer applies. Any Saturday evening Mass fulfills the Sunday obligation, regardless of the person’s motivation for choosing Saturday instead of Sunday. But at the same time, the old idea still lingers. They mean well. Keep in mind that Catholics before 1983 were told that Saturday Masses didn’t count unless one had no option of going on Sunday (which was true at the time), so it was a very serious matter.