Is it normal for sinus to drain ever other day?

Not normally. That is nor really considered "normal" but it is not necessarily worrisome. The most common reasons people of constant drainage are allergic rhinitis or chronic sinusitis. In case like this, i usually suggest that if your symptoms are not controlled with otc medications, then a visit to your primary care md or an ENT would be worth your while.
What do you mean? Your question is not very clear. Do you mean your nose drains or runs? Have you had sinus surgery and you are assuming your sinuses are draining? What is draining? Any other symptoms?