It is difficult to give a definitive answer on the best time to buy Bitcoin. Investing in cryptocurrency is a very risky endeavor and should not be pursued without careful consideration and analysis. Factors to consider include the current market sentiment, the expected performance of Bitcoin, volatility and the overall risks associated with investing in Bitcoin.
The best time to buy is when you feel the most comfortable with the risks and believe that its value will rise in the long run. Generally, times of market stability and periods of low volatility are generally considered as the best times to buy, although the exact timing always depends on your individual circumstances.