  A study of Universal thermodynamics is done in Lanczos-Lovelock gravity. The
Universe is chosen as FRW model bounded by apparent or event horizon. The
unified first law is examined, assuming extended Hawking temperature on the
horizon. As a result there is a modification of Bekenstein entropy on the
horizons. Further the validity of generalized second law of thermodynamics and
thermodynamical equilibrium are also investigated for perfect fluid (with
constant equation of state), modified chaplygin gas model and holographic dark
energy model.
