There's a different type of trading, But be careful coz the market is volatile. crypto trading is 24/7 open so it's up to you when you will trade. The most important thing you can do is do a spot trading on some cryptos use stop loss if you can.
The market will always be volatile and available across board to everyone since it is a market running for 24 hours and even weekends. The choice is only yours, based on your time frame accessible to you in your zone as well as the style of trading you are into, which I believe only day traders and some few short term traders that would be so keen about the time they want to be trading of some sort, but as far as I am concerned, it really does not matter in the crypto space, as the only thing you just need is the knowledge to always know what to do at every certain time the market is there for you to take advantage of.
Moreover in the general term, there is no best time period in a day for crypto trading, what is important is to find the time suitable for you and then do what you have to do.
But traders are not ready to accept these general truths but looking for auspicious kind of things as they do believe this kind of external factor may help them for making profits. I am not sure what is OP is actually looking for. In general, news hours are good timings for trading across all markets.