Dont do what my dizzy sister did a few years ago - she used to work sunday morning so... on going to bed, the night the clocks go forward she went to set her alarm and remembered that the clocks were going forward one hour. For some reason known only to her, she decided that rather than altering the time forward one hour on to BST, she'd amend the time of the alarm - which she put forward one hour. So she woke up 2hours late instead of the one hour she would have done if she'd left the clock and alarm as it was.