User login failure logs contains out of range dates

I have attempted to retrieve a record of user login failures for a specific time period using the endpoint /api/v2/users/user_id/logs.

The following is the content of the query.

type:fp AND date:[2023-07-26T15:11:13Z TO 2023-07-26T15:41:13Z]

Here is part of the response

   "date": "2023-07-26T15:11:12.924Z"
   "type": "fp"

I specified 2023-07-26T15:11:13Z as the start of the range, but 2023-07-26T15:11:12.924Z, which is one second earlier, is included.

I would like to know the cause of this behavior.