Troubleshoot:Conditional formatting - Today's date is 180 and 240 days past date in cell

Conditional formatting - Today's date is 180 and 240 days past date in cell

I know this is simple, but I can't get it to work simply.
 
As you can see in the picture, I have a spreadsheet of dates.
I already have it formatting blank cells in
" =$M$24:$S$27,$W$24:$AC$27,$W$32:$AC$35,$M$32:$S$35,
$C$32:$I$35,$C$40:$I$43,$M$40:$S$43,$W$40:$AC$43,$C$24:$I$27,
$M$6:$S$9,$M$16:$S$19,$W$16:$AC$19,$C$16:$I$19 "
with red fill.
That is also going to be my target area for what this question is about.
 
With all of those dates - and there are a lot more not shown - I want conditional formatting to compare the date in the cell with today's date and change the formatting accordingly:
Red for a difference greater than or equal to 240 days (stopping if true to keep from nesting commands about the 180 day one?)
Amber for a difference greater than or equal to 180 days
 
The little " - " in the cells doesn't have to be a minus sign.
It's just something to designate that the listed person doesn't need a date in that cell.
It can be anything, obviously.
 
I don't want to have to go through typing conditions like: =(C16-TODAY())>180,
=(C16-TODAY())>240 , =(C17-TODAY())>180, =(C17-TODAY())>240, et cetera.
I can't get stuff like =Today()-180 to work either. 
 
Is there a simple solution to apply across the target area, or do I need to cut my losses doing it the long way?
 
Thanks in advance.

Keys to the Problem Conditional formatting - Today's date is 180 and 240 days past date in cell

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