Timezone used by time parameter is always in GMT. How can I let user pick the timezone when enterin

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I have a BIP report with a parameter with a time component (It is a date type with a date string of" MM-dd-yyyy  HH:mm:ss am").

 

What I am noticing is that date entered on the parameter screen is always in the GMT timezone. The report I am building asks the users to indicate a date/time range.  My report is used by persons from different timezones so I first assumed that the timezone used when entering a time is using the 'user' timezone.

Anybody else noticing this behavior?  At this time, my only workaround is to let the user know that the parameter they are entering is in GMT timezone.