value entered in a cell based on a date in another cell.

I need a formula that will basically just display a 1 or 0 in one cell based on the date in the cell next to it.

If the date is older than 180 days then a 0 will be displayed in the cell.

If the date is less than 180 days then a 1 will be displayed in the cell.

I have an attachement as an example.

thanks for any help.

Nick