This TimeValue function returns the type Variant with VarType 7 (Date) and stores this value internally as a double-precision number in the range 0 to 0.9999999999.
TimeValue 函数的返回类型是变量，带有 VarType 7（即日期），并在内部将此值存储为大于 0 小于 0.9999999999 的双精度数。