How accurate is Apple server time?

It appears that the only alternatives we have to set date and time automatically in Mojave System Preferences are Apple servers. Does anybody know how accurate this time is? Is there any to choose other servers?


Thanks

MacBook Pro (15-inch, 2018), macOS Mojave (10.14)

Posted on Oct 30, 2018 3:56 AM

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Posted on Oct 31, 2018 12:11 AM

To my knowledge the Apple time servers are within a second or two of the NIST servers. If you would prefer those, you can unlock System Preferences > Date & Time > Date & Time and type in "time.nist.gov" assuming you are in the US.

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How accurate is Apple server time?

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