Help creating a monthly dial

This is the watch and the formula being used right now - $(#DM#*30)=8?240:30$

http://noblehomeloans.com/contact-us/

If you have a watch face with month names in a circle you would use this in the “Rotation” box if January is at the top of the circle.

(#DMYR#-30)

If the top of the circle is a different month just change the number and maybe the -/+ until it lines up correctly