Dynos use the Network Time Protocol (NTP) for time synchronization indirectly via kernel passthrough. We configure the dyno’s underlying host to use time services provided by the Heroku platform’s Stratum 2 NTP servers. These servers sync to a pool of Stratum 1 time servers provided by NIST. Heroku uses the same time servers across its entire fleet to ensure homogeneous and synchronous time regardless of location.
View categories