3 ms·
Is the time-keeping precision at the multiple sites accurate enough that local drifts can be excluded as a factor in the differentials?
by fluidcruft 13y ago
Is the time-keeping precision at the multiple sites accurate enough that local drifts can be excluded as a factor in the differentials?
- anonymoushn 13y agoLocal drifts of multiple millis can be excluded. Millis are huge.
- JackFr 13y agoI'm no expert, but if both Chicago and New York are synching their clocks to NIST(Gaithersburg, MD) or the Naval Observatory (Washington DC), the a message from Washington sent at the same instant, should arrive at the same instant, as measured in local time. A more 'science' way to make the claim that Nanex is making, would be to compare the same products on other Fed meeting dates.
- davidmr 13y agoAny time synchronization protocol I know of takes into account network latency and attempts to compensate. As measured by perfectly synchronized clocks against the same reference source (leaving aside for the moment that there is no such thing), the received timestamps of a message originating from one location and being received by two locations at different lengths of cable from another will reflect the difference in the time it took to get from one to the other.
- sseveran 13y agoReal market data uses PTP driven by GPS calibrated clocks.
- phyalow 13y agoCorrect, most brokers use PTP also.
- mrab 13y agoI'm also curious about how they prove this. The article assumes the times were in sync.