Be on the lookout for Saturday's 'supermoon'

Creedence Clearwater Revival might have seen a bad moon risin' back in '69, but we're going to see a "supermoon" during Saturday night's lunar perigee. That's because the moon will be the closest it has been to the Earth -- a mere 221,571 miles away -- in nearly 18 years. To compound the effect, the supermoon will be a full moon, creating something of a lunar double whammy and appearing larger to us than it has anytime since.

Check it out in the evening when it's hovering over the horizon in the east, just before setting, for the most dramatic effect. Horizon moons usually appear freakishly big, anyway, so this one should put on quite the show.

Making this even more interesting is that it will all happen less than 24 hours before the vernal equinox, the official beginning of spring, which kicks in at 7:21 p.m. Sunday. Naturally, those looking for an apocalypse are predicting one, pointing to a pattern of doom that includes the tragic earthquake and tsunami last week in Japan, upheaval in the Middle East and all sorts of wars, famines and locusts breaking out around the globe.

Yes, tides will rise, but just a tad. Maybe there will be some storms. A volcano or two might erupt. Or not. But take comfort in the fact that the Earth has survived other supermoons without incident.

Here are some of the best places to view the perigee moon Saturday night.

If you want to do some gardening by the light of the silvery supermoon tomorrow night, here are some suggestions to get you started: