Use actions of Timezone Utils library if you want to convert a given client-side time to a time in a specific timezone.

Action ConvertDateTimeByTimezoneOffset:

Converts a datetime from the end-user timezone to TimeZone Offset.

TimezoneOffset input parameter is in minutes and defaults to UTC offset = 0.

Action ConvertDateTimeToUTC:

Converts a datetime from the end-user timezone to UTC.

Action GetCurrentTimezoneOffset:

Returns the timezone offset of the current time.

Action GetTimeInTimezone:

Returns the current time in the timezone that is indicated in the input parameters.

TimezoneRawDSTOffset input parameter value is added to the offset, when provided. 

Action GetUTCDateTime:

Returns the UTC time in DateTime data type.