The thing is that people doesn't know the exact time they invest in bitcoin, even as we are campaigning about bitcoin investment when to invest and when not to invest, its truth that the beat time to invest in bitcoin does not exist but people do emphasize that the only period you can invest in bitcoin is when the price of bitcoin is low, So people doesn't know the actual time to invest, for me I do invest in bitcoin anytime I feel like to invest in bitcoin, so I believe that with such investment that is not planned you can make a profit, the thing is that anything you have funds don't hesitate to invest in bitcoin, in future it will yield positive for you.
There is no best time to invest in Bitcoin because whenever you buy it will be the best for you. That is, your own opinion and money will depend on when you should invest and when not to invest. If you have enough money to buy bitcoins, you will be interested in buying them even at high prices. And if you don't have money, you won't be able to buy bitcoins for investment even if the price of bitcoins goes down.
So stop thinking that there are best times to invest. Buy whenever you have the money and try to invest regularly so that your investment grows with the gradual accumulation of bitcoins.