Checking the documentation here, under the section “Endpoint pattern”:
If a time period is not specified the time parameters will default to the last 30 days
And under the section “Request/response behavior”:
For example, say your query matches 6,000 Tweets over the past 30 days (if you do not include date parameters in your request, the API will default to the full 30-day period). The API will respond with the first ‘page’ of results with either the first ‘maxResults’ of Tweets or all Tweets from the first 30 days if there are less than that for that time period. That response will contain a ‘next’ token and you’ll make another call with that ‘next’ token added to the request. To retrieve all of the 6,000 Tweets, approximately 12 requests will be necessary.
