I believe it will not going to happen again this time because the market is stagnant all throughout the year.
The door of improvement for crypto prices this year looks closed and i think it will open again some other time.
Nobody can expect when it happens. Do you remember the events of 2017? No one could even guess that Bitcoin and most of the altcoins could go to the Moon so fast. Suppose, we will see something like that, hope in December again. But maybe whales decide to do it later, for example in February 2019!