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Because of the 1 hour delay that Dexcom has on the CGM data, this means that CGM records will include the readings from up to the previous hour. For example, at 10 am UTC the payload would include the readings from midnight UTC up to 9 am UTC. A single cgm record in the Validic Inform API represents one UTC day.
Duplicate Data
If a patient fully disconnects Dexcom from their Validic user and then reconnects that same user within 30 days, it is highly likely that the data pulled in upon reconnection will include duplicate data that you have already received. You can use the Validic "id" and "checksum" to check for data you may have already consumed. You would want to check the "time" and "value" pairs of the CGM records to check for possible duplicates.
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