After the first monero halving day on 2015-9-5 it took monero a year and a couple of days to go 3700%+, and after the second halving day 2017-1-21 it also took monero a year and a couple of days to go up, it went 4300%+. the third halving day was on 2018-6-10 and that's almost 240 days ago and i think that when it completes a year and a couple of days it will go up at least 500$.