Method:

• Visit Heavens Above Location Database and search for your location
• Pick your Location from the responses for the search
• When redirected to the homepage, click the Click here for a sky chart and table of positions for your location at the top

Shortcuts:

• London
• Birmingham
• Manchester
• Edinburgh

London illustrated below, but using the website you can adjust the time you’re observing to reflect the rotation of the sky:

See also: http://www.guardian.co.uk/science/2013/feb/14/how-to-watch-asteroid-2012-da14-earth

It will be at closest approach around 1930h – so European viewing will be rubbish, you need to be in Indonesia for that – but still, make of it what you can.