Convert Timestamps in API Development

REST APIs commonly return created_at and updated_at as Unix timestamps. Convert them here to verify the expected date before writing parsing logic.

Generate a specific date's timestamp using "Date → Timestamp" mode when constructing API requests with date range filters.

JWT tokens use exp (expiry) and iat (issued at) as Unix seconds timestamps. Decode them here to check if a token has expired.

Webhook timestamps are often in milliseconds. If a timestamp looks 1000× too large, switch from seconds to milliseconds mode.