Hi, in RemoteClockMonitor.MonitorRemoteOffsets() implementation, if node's clock offset goes beyond the maxOffset parameter, this node will Fatalf and suicide.

Parameter maxOffset is set to 250ms by default, any reason for choosing this number?
and as the design goal, Cockroachdb should be geo-distributed, then how to set this number for cross-datacenter deployment if without some infrastructure like Atom/GPS synchronized clock using in Spanner. Does normal NTP work?

Waiting for your clarification..:-)