How to automatically reload a web page at a certain time?

Question

I have a website that I want to be reloaded at a certain time, like 3:35pm, not after a specific interval like 5min. How do I do that?

Answer 1

The following JavaScript snippet will allow you to refresh at a given time:

function refreshAt(hours, minutes, seconds) {
    var now = new Date();
    var then = new Date();

    if(now.getHours() > hours ||
       (now.getHours() == hours && now.getMinutes() > minutes) ||
        now.getHours() == hours && now.getMinutes() == minutes && now.getSeconds() >= seconds) {
        then.setDate(now.getDate() + 1);
    }
    then.setHours(hours);
    then.setMinutes(minutes);
    then.setSeconds(seconds);

    var timeout = (then.getTime() - now.getTime());
    setTimeout(function() { window.location.reload(true); }, timeout);
}

Then you can add a script tag to call the refreshAt() function.

refreshAt(15,35,0); //Will refresh the page at 3:35pm

Note that this code will refresh based on the client local time. If you want it to be at a specific time regardless of the client's timezone, you can replace get*() and set*() (except getTime()) on the time objects with their getUTC*() and setUTC*() equivalent in order to pin it to UTC.