Hashtracking's Hashtag Explorer pulls data from the past - searching back as many as seven days and collecting as many as 1500 tweets. In order to do this, it uses Twitter's Search API. The Search API limits data searches to the past 7 days and/or a maximum of 1500 tweets. This means:
- If there were 1500 tweets in the last 24 hours, you will not be able to see anything from before this time.
- If there were only 300 tweets over the last 7 days, you will not be able to see the tweets from before then, even if there were 1000 tweets 8 days ago.
Additionally, the Search API may have differences from the Streaming API. Certain users' accounts may be blocked and fail to be counted in Search results, even though they actively participated in tweeting with a hashtag. Also, unlike the streaming API, which returns all tweets, the search API returns "relevant" tweets, as determined by Twitter. This means that there may be tweets that use a hashtag that might not show up in the results.