1 (Also called) civil year the period of time, the calendar year, containing 365 days or in a leap year 366 days. It is based on the Gregorian calendar, being divided into 12 calendar months, and is reckoned from January 1 to December 31.
40 FACTS ABOUT SLEEP YOU PROBABLY DIDN'T KNOW... (OR WERE TOO TIRED TO THINK ABOUT). - The record for the longest period without sleep is 18 days, 21 hours, 40 minutes during a rocking chair marathon. The record holder reported hallucinations, paranoia, blurred vision, slurred speech and memory and concentration lapses.
7 to 8 hours sleep is must for proper functioning of brain. So, you are remained with 17 hours in a day. Can you now give 17 hours continuously without any other thing to study? No,my brain didn't allowed me ever to study continuously more than 30 mins but i cleared Jee with 1469 rank.