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$rightNow

$rightNow() -> number
Compact type signature<:n>
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Date And Time

Source: FUME

Documentation​

Returns the current Unix timestamp in milliseconds as a number.

Unlike $millis(), which is fixed once per evaluation, $rightNow() reads the clock each time it is called. Use it when you need the actual current time during a long-running or asynchronous mapping rather than the evaluation start time.

The function does not inspect the input and does not return a formatted date string; it always returns a numeric millisecond timestamp.

Examples​

Check the timestamp shape without depending on an exact clock value​

No file-backed example is used here because $rightNow() ignores the input and the useful contract is the return type and its relation to $millis().

Input

null

Expression

($start := $millis(); $now := $rightNow(); {"isNumber": $type($now) = "number", "atOrAfterEvaluationStart": $now >= $start})

Result

{
  "isNumber": true,
  "atOrAfterEvaluationStart": true
}