what is the halving bitcoin?

the halving bitcoin is:

source: https://www.todoinone.com/2019/01/bitcoin-halving-2020-what-will-the-price-of-bitcoin-be.html

Every four (4) years on average block 210000 in this years:(2012-2016-) 2020 coming soon

If you want a detailed and more explanation about the(btc) Bitcoin Halving, keep on reading this article. in this post on :

https://www.todoinone.com/2019/01/bitcoin-halving-2020-what-will-the-price-of-bitcoin-be.html

to know more about time exact for the coming halving bitcoin 2020 , you should viste this website :Bitcoin Block Reward Halving Countdown is: https://www.bitcoinblockhalf.com/