According to this source https://www.litecoinblockhalf.com/ The day, hour and minute of the halving date can be customized manually in case of mining troubles.
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in publications is governed by House rules. 您可以收藏它以在圖表上使用。