Web Hosting Uptime is regarded as measure of percentage time your website is working. This is the important aspect in making idea about the hosting services. Mostly hosting providers offers uptime up to 99.86%. It means that if the server gets down, your website will remains down for about an hour every month. But this might not be true in all cases.
Many hosting companies guarantee 99.86% uptime. So if you are looking for web hosting services do consider this important factor of uptime. As greater the webhosting uptime, the more will be the time your site remains up.