Considering the patterns of the market value of Bitcoin from the beginning of the year to now, it is very possible that we meant witness Bitcoin hitting $20k before or within the first quarter of 2020. My assumption is based on the instant increase in the value of Bitcoin within May,June and July this year. It is also very possible that the value might also drop to $5k.
By the end of the year is what OP is trying to figure out the price of bitcoin not first quarter of next year, bitcoin movements has been unpredictable, everyone wishes to see it above $20k before 2020. But is it really possible, as for me it might and it might not, but by 2020 if there is no Reoccurring negative news, we gonna surpass it's previous all time high