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.
Even today, women continue the tradition of popping the question to their partners on February 29. Leap day is also St Oswald's Day, named after the Archbishop of York who died on February 29, 992. How many days are there in February? In a normal year, there are 28 days in February - while leap years are extended to 29. And a year is normally 365 days long, making a leap year 366 days. When is the next leap year? The last leap day fell on February 29 2016, and the next leap year is in 2020.