Usually, 8 hrs of sleep, and approx 1 hr for the grumpiness to be gone and mind to clear up. A nice strong (espresso or turkish, cca 2 deciliters) of coffee is obligatory, and I even got headaches if I don't have my morning coffe. Not to mention the dead ppl, nuclear wars and total annihilation of the closest surroundings caused just by looking at it until the caffeine strikes.
I rarely go to sleep before 1 am, and wake up around 8.30 - 9.00 (working time is not fixed, so...

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