| Overload | Description | 
|---|---|
| Subtraction(TdPeriodTimeWithTimeZone,TimeSpan) | Subtracts the specified TimeSpan from a TdPeriodTimeWithTimeZone. | 
| Subtraction(TdPeriodTimeWithTimeZone,TdIntervalDayToSecond) | Subtracts the specified TdIntervalDayToSecond from a TdPeriodTimeWithTimeZone. |