I e-filed February 2, 2016 and IRS "accepted" the very next day. When I check the IRS website, it still says "return accepted" but hasn't progressed to "refund approved" (and certainly not "refund sent"). It's been 15 calendar days (but closer to 10 or 11 business days) and I'm getting a bit nervous. The IRS website says it takes 21 days for a refund to be sent, but my refund hasn't even been approved yet. Last year it took only maybe five days between "return accepted" and "return approved."