Thanks, that was the problem. Is it documented somewhere that leading zeros should not be used?
The purpose of this exercise is to fill the array with radio program titles (one per hour) so that when someone logs onto our radio station website, it will display "Now playing: The Tom Collins Show ... Click here to listen". I will have to update the script every time the schedule changes, but that's OK. I'll also need to find out how to get the hour of the day for the Eastern time zone (including Daylight times) as well as the day of the week for the Eastern time zone. If I concatenate the day of week with the hour of the day, that should point to the element in the array to display, such as Monday at 1 pm, display message 113 (1 and 13).