AWS Firehose to S3 Prefix

Destination configuration default

Intermediate S3 prefix

(Optional) To use the default prefix for Amazon S3 objects, leave this option blank. Kinesis Data Firehose automatically uses a prefix in “YYYY/MM/dd/HH” UTC time format for delivered Amazon S3 objects. You can add to the start of this prefix. For more information, seeĀ Amazon S3 Object Name Format.

Custom Prefixes for Amazon S3 Objects

When evaluating timestamps, Kinesis Data Firehose uses the approximate arrival timestamp of the oldest record that’s contained in the Amazon S3 object being written.

The timestamp is always in UTC.