Abstract
Background: London Interbank Offered Rate (LIBOR) exists since 1986 as a benchmark interest rate. Methods: Using two-layer linear regression method, we found a pattern of shortterm nature in LIBOR behaviour. Results: To wit, 2-month LIBOR experiences a jump after Xmas for the last two decades. The direction and size of the jump depend on the data trend on 21 days before Xmas. Conclusions: The obtained results can be used to build a winning strategy on the Swap Market.