I always liked the look of 2-sided clocks. A few months back I picked this one up at Jysk for a reasonable $19.99 or so.
I didn't have a specific spot in mind for it, so with the help of my handy dandy assistant I found this spot worked best.
The old clock will find a place elsewhere, and a mirrored star I bought on clearance for $6 from London Drugs sometime last year will cover the hole in the wall, for now.
Home Depot also has an oval outdoor clock currently on clearance on their website. I haven't seen it in person but it looks nice in the picture. The 'swivel' factor may be an issue in wind, though! It's larger than the one I bought, and reg. $99.99 on sale for $49.99.