4/20 announcement is fake and was to create buys while bittrex unloads coins. This is why you aren't going to see a big run up like last pump.
If you don't believe me check out this:
https://chainz.cryptoid.info/cann/#!walletsBittrex unloaded 6 million coins, used to have 28 million! If this coin is going to do something why are they unloading?