  We consider rotational diffusion for two systems - a macrospin under external
magnetic field, and a particle diffusing on the surface of a sphere under
external torque. Microstates in the two cases transform differently under
time-reversal. This results in Clausius like dependence of stochastic entropy
production (EP) for macrospins, and an excess EP for diffusion of particles on
sphere. The total EP in both the cases obey fluctuation theorems. For
macrospins, we derive analytical expression for probability distribution of
total EP in the adiabatic limit. Numerical simulations show that the
distribution functions of EP agree well with theoretical predictions.
