I've noticed my cannabis/marijuana addicted friend, usually feels compelled to smoke his herb of choice between 4pm and 5pm and gets a sort of destructive desperation for it if he hasn't got any. Is there a link between cannabis and the time 4.20pm? I noticed other cannabis addicts are the same in terms of the times the smoke it. Basically, is there a link between cannabis and smoking it at 4.20 (adopting the common term cannabis users use '420') Ps. For many who don't know, cannabis us exactly the same as marijuana, it's what us British people call it.