Some routers & modems work best with port forwarding if you have a static local IP. Manually set your network interface card (NIC) to use a static ip address. You can also download my FREE Simple Static IP tool to set it for you.
Today is October 14, 2015 so that means that 180 days before today would be April 17, 2015.
October is the 10th month of the year and has 31 days. October was originally the eighth month of the Roman calendar. It comes from the Latin word octo meaning eight. Later, it became the 10th month when January and February were added to the Calendar.