How to disable timeout for nginx?

It may not be possible to disable it at all, yet a feasible workaround is to increase the execution time. On a nginx tutorial site, it was written:

If you want to increase time-limit for all-sites on your server, you
can edit main nginx.conf file:

vim /etc/nginx/nginx.conf

Add following in http{..} section

http {
     fastcgi_read_timeout 300;
     proxy_read_timeout 300;
}

and reload nginx’ config:

sudo service nginx reload

I have used a rather large value that is unlikely to happen, i.e. 999999 or using time units, to one day via 1d.

Beware that setting the value to 0 will cause a gateway timeout error immediately.