  The latest experimental progress have established three kinds of neutrino
oscillations with three mixing angles measured to rather high precision. There
is still one parameter, i.e., the CP violating phase, missing in the neutrino
mixing matrix. It is shown that a replay between different parametrizations of
the mixing matrix can determine the full neutrino mixing matrix together with
the CP violating phase. From the maximal CP violation observed in the original
Kobayashi-Maskawa (KM) scheme of quark mixing matrix, we make an Ansatz of
maximal CP violation in the neutrino mixing matrix. This leads to the
prediction of all nine elements of the neutrino mixing matrix and also a
remarkable prediction of the CP violating phase $\delta_{\rm
CK}=(85.48^{+4.67(+12.87)}_{-1.80(-4.90)})^\circ$ within $1\sigma (3\sigma)$
range from available experimental information. We also predict the three angles
of the unitarity triangle corresponding to the quark sector for confronting
with the CP-violation related measurements.
