Like January, February is a good time for visiting Japan as the weather is usually sunny and dry and sightseeing spots are not crowded. The downside of a visit in winter are the relatively short days (sunset is around 5:30pm in Tokyo) and the vegetation's barren state.
1 A healthy person drinking approximately 2 liters of water per day makes 800 to 2000 ml of urine per 24 hours (4).  If the urinary system is healthy, the bladder can hold up to 16 ounces (2 cups) of urine comfortably for 2 to 5 hours (5).
How long does it take to digest starch? Depending on the individual but most people can digest starch in about an hour and 20 minutes , then between 80% - 99% of starch will be dissolved into the blood stream . How long does it take to digest fruit? It takes about 30 minutes for the digestion of fruit.