SystemDateToLocalDate
Converts a system datetime string to the local time of the current Marketing Cloud Engagement user.
The system time is North American Central Standard Time (UTC-6) without adjustments for daylight saving time. The local time is the time of your Marketing Cloud Engagement user account, which can be configured in Setup.
The SystemDateToLocalDate() function has one parameter:
systemTime(string): Required. The system time value that you want to convert to local time.
To use this function, pass it your current system time.
The system returns the local time based on the value contained in the @currentSystemTime variable.