Timer event - Delay until the DATE AND TIME specified

I have a process that gets kicked off given a date and TIME specified by a DATE AND TIME constant. So in my start event, I have a timer and I selected the option to Delay until the Date and time specified by the expression where I have a constant.

Say I want the process to kick off tomorrow at 7:00 AM then I would make the constant 7/24/2018 7:00 AM. That is working perfectly fine. However, if I want now the process to kick off a second time at 1:00 PM on the same day, the process is not getting kicked off.

I am thinking the timer is not looking at the TIME and it is looking at the date only. Is this an Appian defect? 

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