Are Comcast Digital Voice CDR timestamps in local time?
Answer
Comcast Digital Voice call records usually present call date and time in the account’s local service time zone on customer-facing statements, but legal or exported CDR formats can differ—confirm the time zone label on the specific record set you received.
Before you start: stop right away if…
- Do not edit CDR timestamps if the records may be used in a legal or formal dispute.
Follow these steps
Identify the record type
Check whether the file or page is a normal online call history, a monthly statement excerpt, or a formal CDR export from Comcast.
You should see: You know which kind of record set you are reading.
Look for an explicit time zone label
Inspect headers, footers, and column labels for local time, UTC, or a zone abbreviation near Call Date or Call Time.
You should see: A time zone is identified, or none is printed.
Compare a call you know
Find a call you placed at a known local time and compare it to the recorded timestamp.
You should see: The record matches local time, or shows a consistent offset.
Ask Comcast to confirm if unmarked
If the export has no time zone label and the records matter, ask Comcast support or the records department which time zone applies to that CDR set.
You should see: Comcast confirms local service time or another standard used in the export.
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Extra tips
What to look for: Call Date and time columns, any time zone abbreviation on the statement or export, and whether daylight saving changes appear to shift times
Before you change anything: Identify whether you are looking at a billing call log or a formal CDR export. Save an unaltered copy of the records. Ask Comcast in writing if the time zone is not labeled. Do not alter timestamps if the records are for legal use.