09.10 (GMT) The scheduled start of the protest is 2pm local time, and 52,786 people have said on Facebook that they will take part, with a further 9,800 marked "maybe". But what sort of conditions will they expect when they are on the streets: the temperature is forecast to drop throughout the day, reaching lows of -9 by nightfall. The location of the Moscow rally is different to the December 10 protest, which was held on Bolotnaya (literally "Swamp") Square on an island in central Moscow to the south of the Kremlin. This protest today is due to be held on Prospekt Akademika Sakharova. The location is further from the centre of Moscow and several kilometres north-east of the Kremlin and Red Square.