These include studies of the therapeutic value of CBD for: 1  Treatment of substance use disorders (opioids, alcohol, cannabis, methamphetamine) 2  Attenuation of the cognitive deficits caused by THC. 3  Neuropathic pain due to spinal cord injury.  Mitigating the impact of cannabis use on risk for schizophrenia.
Every fourthyear is a leap year, as a rule of thumb. But that's not the end of the story. A year that is divisible by 100, but not by 400, is not. So 2000 was a leap year under the Gregorian calendar, as was 1600. But 1700, 1800 and 1900 are not leap years.
Introducing Leap Years. A common year in the Julian calendar has 365 days divided into 12 months. In the Julian calendar, every four years is a leap year, with a leap day added to the month of February. At the time, February was the last month of the year, and Leap Day was February 24. However, leap years were not observed in the first years after the reform due to a counting error.