Wouldn’t it be fun to be able to target our designs based on what season, day, or hour it is using CSS media queries?

Experimental code ahead. The following code doesn't exist…yet.

/* Style for summer */
@media (time: from(2013-06-21) to(2013-09-21)) {
    html {
        background: radial-gradient(yellow, white);
    }
}
/* Style for a birthday */
@media (time: 2013-09-12) {
    html {
        background: url(confetti.gif);
    }
}
/* Style for the evening */
@media (time: from(17:00:00) to(21:00:00)) {
    html {
        background: darkblue;
    }
}