When was the last time you looked forward to looking at a clock? Not to find out the time per se — like gee, maybe it’s beer o’ clock already — but waited with bated breath … ...

For 24 hours, Christian Marclay's masterwork The Clock tells us, via a collage of clips from films showing clocks, watches, sundials and digital displays, exactly what time it is.

And in a new focus, as well. The video gives us access to images that older generations of humans couldn't have imagined, much less actually seen.