Is this use of rel="canonical" correct?

Question

Google

Hello! Tell me if the use of canonical is correct ...

There is a poster aggregator site (site_A_5_cities), now there are 5 cities. One city has already developed enough and I want to separate it into a separate site, there will be site_B_newyork ... it’s impossible

to delete the city of newyork from site_A_5_cities, because this is an aggregator and people come from different cities, so I’m thinking about this option: and each poster of the city of newyork site site_A_5_cities automatically insert -



posters are added to the site automatically (parsing), i.e., the same events will be added to both sites (site_A_5_cities and site_B_newyork) and the same URLs will be generated (site_A_5_cities/some_event and site_B_newyork/some_event), so it will not be difficult to automatically add the desired canonical and therefore you need to add canonical t to the content of the poster will be 90% identical ...

Thank you

Answer 1

From your description it is not at all clear how you are going to transfer the city