Moscow is at 55.7558° lattitude while Ben Nevis is at 56.7969° of latitude, meaning Ben Nevis is further north than the capital of Russia.
Being this far north adds some interesting challenges to climbing and walking on Ben Nevis and Glencoe. In winter it means short days with limited amounts of daylight.
While in summer, if you want to watch the sunrise you need to get up early, really early. On the 21st of June the sunrise will be at 04.27. Hardly worth going to bed!
You also need to be aware that the light gets stronger before the sunrise, so you need to be ‘in position’ with plenty of time. Ben Nevis is further north than many people realise.