Solunar table

[Dore]

I am planning a trip for July. I would like to create a custon Solunar table for a location in northern Quebec. When I go into the edit mode it allows me to enter the correct coordinates but I must also enter a zip code & the system always reverts to the coordinates for the zip code. Can I do this ?

[Golden]

It doesn't look like that is going to work with what I have.
Sorry......