Indeed. We can create our own TA or speculation regards this but this is not a hundred percent for sure because Cryptocurrencies especially Bitcoin cannot be precisely predicted. However, one thing is for sure if Bitcoin pumps, alts will follow, and in some rare cases, alts rise first then next Bitcoin. Like now where Bitcoin started the rally and now alts are also beginning to make an entry.

Whatever time you want because every time is a good time to buy Bitcoin and now the outcome will only depend on how you will manipulate or manage the process. Like if you are a holder, supposedly you are now in the where you need to make a sell but you could choose to buy now and take this opportunity because Bitcoin is still growing.