https://stackoverflow.com/questions/6841333/why-is-subtracting-these-two-times-in-1927-giving-a-strange-result https://stackoverflow.com/questions/6841333/why-i

https://stackoverflow.com/questions/6841333/why-is-subtracting-these-two-times-in-1927-giving-a-strange-result https://stackoverflow.com/questions/6841333/why-is-subtracti... Shanghai 1927. I'm sure there is a .Net answer as well similar to this.