Our goal is to minimize downtime as much as possible. We can’t give an accurate estimate of how much your website will experience, but can inform you that your downtime depends on how long your domain's DNS needs to propagate. This could take anywhere between 24-48 hours depending on where you are in the world.
That being said, we suggest scheduling a transfer when your website is least active. We’ll work with you to identify when would be a good time to migrate your site.