Halving is the event when mined BTC blocks reward gets cut into half, and our next halving is on ~2020.05.30.
Looking back, we can notice that there is a lower low 370 and 318 days before the previous halvings, which is caused by a steep decline(47.7% in 2012, and 37.96% in 2016).
Based on this simple comparison, for most of the future hodlers, for people who don't want to put up with a bear market, and for longer term investors, my suggestion is simple:
Look for good entry price, after 2019.05.26, more probably even after 2019.07.17, after as you see another steep decline of 45-35%(this time a more credible ~25%), BTFD!
Notable is that there is huge 2/4 day that kick starts the bull run, but by then we have missed some(75-150%/200%) of the movement from the low, and this can mean the difference between 20x or 10X gains in the next bull run.
Coincidentally, these months, after 2019.07.17 also are close to the ending of the 20 months bear market, forecasted by @IvanLabrie, with Time@Mode method(around 08/09.2019).
Best of luck out there in this bear market!
PS.: Don't pay much attention to the prices on the chart. What I tried to achieve is to identify good entry price based on events, not tied to a certain price.
Lets hope we nail the bottom with an all in!