Baikal-GVD neutrino telescope is under construction now. The 2021 telescope configuration includes 8 clusters of 288 photodetectors each. Сluster is a functionally complete detector that can register events, muons and cascade showers, in stand-alone mode and jointly with other clusters. The angular resolution of the detector is determined by the accuracy of the time measurement with the telescope channels. The uncertainty of the time measurement depends, in particular, on the accuracy of the time synchronization of the channels. The article describes the method of synchronization of Baikal-GVD and presents the results of studies of the accuracy of time synchronization both for individual clusters and for the installation as a whole.