Timed Webpage Refresh, Using Host Time

I'm embarking on a new project - although I've hit a wall.

I require a page to refresh at a scheduled date and time, several times a day.

For example, I would like the web page to reload the index at 3:15PM

So if anyone has the web page open during that time, it will automatically refresh for them.

Timing is quite important so I would need the script to use the server (hosts) time and not the end users time.

I am currently deciding on which server language to use, although Javascript is probably a suitable option? or would ajax be more the thing for this?

The webpage must execute the refresh at the time 3:15pm, so no matter when someone visits the page, even if its hours before, it must refresh at that time.

If anyone has any pointers on the best way to achieve this and what language to start with I am forever greatful :thumbsup:

I do a lot of image design work and although I have worked with a few coders in the past but I haven't gone too much into coding myself, but its something I'm going to take time to learn and get involved in, so I'm not looking for script hand outs here, mainly just a nudge in the right direction.