NTP
NTP Infrastructure
NYCMesh does not have yet a Mesh NTP server but 2 mesh members are providing NTP function on their server.
Use 10.10.10.123 as your NTP server address.
What is NTP
The Netwok Time Protocol is a "network" protocol for devices to sych their clocks. See Wiki
IPs
10.10.10.123 - NTP for the mesh ( Use this one )
NTP stats and status
Here are some stats on the NTP servers:
NTP server hosted in Manhattan (it has a Stratum 1 receiver).
Alternatives
There are many NTP servers on the Net, google offers it, some hardware maker such as Ubiquiti, etc..