Another All-Time High For Ethereum, Almost 20% of Total Crypto Market Cap

Another all-time high for Ethereum this Saturday afternoon:

Ethereum has reached $1,420 this afternoon and Ether now accounts for ~18.5% of total cryptocurrency market capitalization. Meanwhile, Bitcoin's share of the market continues to decline (down to ~32.5%).

Has anyone else noticed that cryptos tend to rally (about 75% of the time) late at night into the early morning hours Eastern Standard Time? This could have something to do with Asia waking up and piling into cryptos on weakness or perhaps there is another explanation. I'd be interested to hear if you guys have any thoughts on this?