Changing registrar can create downtime for a site?

[tathagata]

As you guys know I am very eager to change my current registrar and going to much cheaper yet simpler one. So, here is my query which I am really worried about? Will there be any downtime?

[batman]

If you do it right then changing only a registrar shall not create any downtime.

[cbtech]

I did it. Didn't create any downtime. Although I have faced some problems as I forgot to remove the WHOIS from my domain.

[tathagata]

Is removing WHOIS mandatory?

[bessieexum]

Transferring domain registrars should not result in website downtime if you manage the Domain Name System (DNS) settings during the transfer correctly; provided your nameservers remain unchanged, your site should remain accessible during this process.