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