Arshad,
Thanks for the additional details. Because of the nature of the connection in the case of Streaming APIs, there is no “rate limiting” per say. The Streaming APIs work with a long lived connection to Twitter so that you can receive Tweets in real-time as they come in.
Am I correct in thinking that you are using [node:10389] with the locations parameter?
When you say you encounter 401 errors “intermittently”, is it because you are trying to connect many times and some attempts are succeeding?
Thanks for the note on the time sync. Additionally, if you want to be sure you can double check this by looking at the “Date” HTTP header in all Twitter API responses.
I hope this helps. Thanks!