Crypto does not run a 365 day calendar, with predictable events. It's a good time to buy, but because of the day of the year.
The crypto events can happen a few times in a year and you re right about that but isn't it if we must feel optimistic about crypto anytime? the big trend will not always happen as last year we have seen crypto has been getting big pump at the middle of the year and it goes down again.
What I'm saying is that one has to be more open minded and think more outside the box. Not think, "Bitcoin pumped 15k in August 2017, that means it's going to pump again in August 2018." Time is better spend thinking of all current factors. Just going by a past time is lazy.