On 9/3/2013 10:56 AM, Jim Lux wrote:
In this case, all the messages were presumably handled by the same carrier, so the issue of skew in timestamps is negligible; they're all presumably running off the same clock.
But not necessarily the same time. For instance, some cell systems run on GPS time, but the carrier may keep records in UTC, since it's the legal time in most jurisdictions. A phone might time stamp using either (Google has a years-old bug in Android which lets it use GPS time and not UTC). So, different devices on the same network may not be in sync.
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