When a bank or credit union has a special certificate they want to offer for a limited time, they will often release it as an odd-term product. What "odd-term" refers to is a duration that differs from the conventional terms, such as 1-year, 2-year, 3-year, etc. Instead, you might see an 11-month CD or even a 29-month CD, for instance. All that's happening here is the institution is trying to differentiate this CD from its regular menu of standard CDs, both as a marketing tool to make the CD stand out and perhaps also as an internal signal to its staff that this is a limited-time CD. It's wise to pay just as much attention to odd-term CDs as conventional ones because these promotional certificates often offer much higher interest rates. That's also what helps them stand out and draw customers.