One question: When have Bitcoin's past halvings occurred?
Bitcoin's block rewards are calculated in satoshis in the code. They keep halving until they reach 0, at which point no new coins will be produced.
If you want to know how long until the next halving, checking the current block height is more reliable than looking at the calendar.
$BTC 's halving is triggered by block height, not by a fixed calendar date. Currently 74504.91.

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