Is there a standard port for (ftp over) TLS ?

I have to setup a ftp server and would like to enable TLS.

I have to configure the firewall as well.

Is there a different standard port for TLS (for ftp its 21)?

Maybe its a pair of ports similarly to the standard ftp: 21 + 22
One port for data and one port for protocol negotiations?

Is there a difference if I use "implicit" or "explicit" TLS mode ?

Marcus