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MUSIC: Tickets go on sale this morning for Chvrches, The Black Crowes, ZZ Top, Willy Moon and Exclamation Pony. Prices vary, 9am
GIVE BLOOD: The Hilton near the Tower Of London is the place to toddle if you fancy donating some blood today. Free, just turn up, 9.30-11am and 12.15-4.15pm
ICE: The London Ice Sculpting Festival takes place from today till Sunday at Canary Wharf (various venues). Free, just turn up, 11am-7pm
ART TALK: Hear hard-working artist Bob and Roberta Smith talk about the Fourth Plinth commission at the ICA. £5, prebook, 1pm
ART: Pop along to Elephant and Castle shopping centre to see Culture Shop: January Sale, an exhibition and live art event by young people in an empty unit. Free, just turn up, 6.30-8.30pm
IMPROV MARATHON: The annual Improvathon takes place at Hoxton Hall. That’s a “50-hour non-stop improvised comedy soap opera in twenty-five 2-hour episodes” set in Cairo, 1926. Most of the participants will see the whole thing through without sleep, which will make for some extraordinary performances, plot twists and insanity. Do the marathon with them (tickets £55) or go for a 1 hour 45 min episode (£10). There’s even a child friendly episode on Sunday from 11am-1pm. £55 (full marathon), £10 (hour and half episode), prebook, 7pm until Sunday at 9pm.
BOOKS: Tim Parks and Swiss author Peter Stamm are in conversation at the London Review Bookshop. £10, just turn up, 7pm
MUSIC: Gloomy tunes from Gravenhurst at the Stranger the Better festival in Kings Place. £12.50-£19.50, prebook, 7.30pm
MUSEUM LATES: Unwind after work with a spot of culture at the British Museum, Natural History Museum, V&A, National Gallery or National Portrait Gallery. Free, check websites for closing times and events.
ROLLER SKATE: The Friday Night skate starts at Wellington Arch. Anyone who feels competent on skates is welcome to join. Free, just turn up, 8pm.
COMEDY: Claudia O’Doherty does another run of her surreal, deliberately ramshackle and hilarious show The Telescope at the Soho Theatre. £12.50, prebook or turn up, 9.15pm
Random London Fact of the Day
Archway is the only London Underground station containing none of the letters in LONDONIST. This fact is also true for Time Out London.
It's cold enough to see your breath. Astound your colleagues and win new friends by holding a pencil to your mouth — cigarette-like — and blowing out puffs of 'smoke'. Then, after allowing suitable amounts of time for them to goggle at your party trick, reveal that you're not smoking a pencil at all. No. It's just water vapour created when the hot moist air from your lungs hits the cold atmosphere. They won't have ever seen anything like it before. "No way!", they'll say. Trust us. BBC Weather has a more sober weather report.
Image by Mark Ramsay in the Londonist Flickr pool.