Interval between sample iterations in replay mode

[pstnslv]

I have a daily log (from 00:00:00 to 23:59:59) I'd like to start it at specific begin time to replay, and don't stop replay to simulate normal daily user behavior in real time. I'd like to use it for machine learning study.
But I don't understand, which interval Gogen use between the last and the first events (after the sample file ends and Gogen replay it again).
The sample:
"@timestamp":"2020-02-17T08:00:00.000Z"
"@timestamp":"2020-02-17T08:00:10.000Z"
"@timestamp":"2020-02-17T08:00:30.000Z"

The output:
"@timestamp":"2020-02-24T16:11:24.517Z"
"@timestamp":"2020-02-24T16:11:34.518Z
"@timestamp":"2020-02-24T16:11:54.519Z"
"@timestamp":"2020-02-24T16:12:07.021Z"
"@timestamp":"2020-02-24T16:12:17.021Z"
...

Can I tell Gogen to start replay the sample file after specified period (like 1 minute for example above) or 24h for my daily log file?
Or maybe it is a bug, and interval between 3-th and 4-rh events need to be 30 sec (on this example)?