Magneto-optical Faraday effect is the rotation of polarization plane of linearly polarized light by a magnetic medium caused by magnetic circular birefringence. The enhancement of Faraday effect which is promising for possible light control devices can be achieveded by multiple reflection interference because of its non-reciprocity, for example in thin films or photonic crystals and microcavities[1,2]. Due to the strong interference between different parts of one femtosecond pulse, Faraday rotation value of the initial part of the pulse may differ from that of its tail and from a steady-state value. Nonmonotonic time dependence of magneto-optical Faraday effect in magnetophotonic crystals at photonic band-gap edge is expected. Calculations were made by using Fourier transform and consequent transfer matrix method in frequency domain. The output Faraday dynamics confirm decreasing periods in time dependence in thin films at the position of local spectral minimum of the effect.Figure 1.Faraday rotation versus time delay; solid curve – calculation, dots - experiment. Experimental registration of Faraday dynamics was performed by using polarization-sensitive correlation technique. Magnetic modification of the set-up includes 1-Oe constant magnet and HINDS photoelastic modulator. Fig. 1 shows calculated and measured time dependencies of Faraday effect in 30-μm-thick film. At the measured interval Faraday rotation decreases with time from 3-degree value to practically zero. Experimental curve is in good agreement with simulation.