I find the exact opposite works for me: if I normally go to sleep at midnight and wake up to an alarm at seven (which is not an unusual pattern for me), if I go to bed at 11pm, I tend to wake up between 5am and 6am, well before my alarm. To a point, the earlier I go to bed, the stronger the effect is, so going to bed at 9pm will usually have me up and refreshed at 1am or 2am, and I feel like I've slept "for the night".