What is meant by the numbers before the "Z" in "2019-10-24T00:00:00.181Z"

2019-10-24T00:00:00.181Z

What is meant by the 181Z here? I have seen Z stands for Zulu time. But what is with the other three digits "181" here? So is this an ISO8601 formatted time?

Solution

The 181 are the milliseconds. For example, JavaScript's Date.prototype.toISOString() method returns an ISO date string in this format.

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