IMPROVEMENT OF INSTITUTE OF CRIMINAL LAW IN TIME AS AN IMPORTANT DIRECTION OF DEVELOPMENT OF RUSSIAN CRIMINAL LAW Reshnyak Maria Genrikhovna, PhD at law, associate professor. <...> Email: irbis-7375@yandex.ru Annotation: This article highlighted and analyzed a number of topical problems of regulation of relations associated with the action of the criminal legislation of Russia in time. <...> The author pays special attention to problems that manifest themselves in judicial practice in the interpretation and application of the Institute of criminal law in time, and also offers solutions aimed at the improvement of the institution. <...> Keywords: application of criminal law in time, the retroactivity of the criminal law, the Statute of limitations, improvement of criminal legislation. <...> Автор обращает особое внимание на проблемы, проявляющиеся в судебной практике при толковании и применении института действия уголовного закона во времени, а также предлагает пути их разрешения, направленные на совершенствование данного института! <...>