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Fundamentals · easy

19. Date & Timestamps

Epoch timestamps and time calculations.

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`Date.now()` returns milliseconds since Unix epoch (1970). Blockchain systems use seconds (`block.timestamp`), requiring unit conversion.

js
const nowSeconds = Math.floor(Date.now() / 1000);

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Check your understanding

  1. 1. What unit does Date.now() return?

  2. 2. What unit is EVM block.timestamp?

  3. 3. How do you convert JS milliseconds to blockchain seconds?

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