I offer you today the BTC halving countdown updated in real-time on your charts
I inspired myself greatly from the gentleman @everget's script LTC halving countdown below
The countdown date is coming from that source https://www.bitcoinblockhalf.com.
The halving date is estimated to be around May 13th, 2020.
That date is hardcoded in the script and is used for the countdown calculation.
The Bitcoin block mining reward halves every 210,000 blocks, the coin reward will decrease from 12.5 to 6.25 coins.
Enjoy the weekend