Using the pre-SNO neutrino oscillation data of the solar and the atmospheric neutrino oscillations including and excluding the LSND (Los Alamos) measurements fits for the three mixing angle of the unitary transformation between the three neutrino mass eigenstates and the weak eigenstates are given. At the same time the differences of the squared masses are fitted to the data. Using an averaged upper value of \delimiter "426830A m_{\nu e} \rangle = 0.62 eV from the neutrino double beta decay, one can limit the sum of the three neutrino masses to be less than 2.53 eV. The new data from the Sudbury Neutrino Observatory allow for the first time with the help of the SuperKamiokande data to determine the solar e and (\mu + \tau ) neutrino fluxes separately. The sum is within errors identical to the theoretical electron neutrino flux from the sun. We thus see all expected solar neutrinos. They only oscillated partially from electron to \mu + \tau neutrinos. In the last part we report calculations of neutrino masses in the R-parity violating Minimal Supersymmetric Standard Model (R/ MSSM). The R-parity violating interaction mixes the three neutrino flavors by R-parity violation with the four neutralinos (photino, zino and the two higgsinos). One finds neutrino masses for the first two neutrinos between 0.001 and 0.04 eV and for the third one between 0.03 and 1 eV.

PACS numbers: 14.60.Pq