The Study about system and concept of time and infancy of "Onmyodo" in ancient Japan.

本研究揭示了唐代和日本古代实行大延历或大衍历期间，新作元或边时推迟月初一的规律变化，并给出了历法月初一的订正表。这也阐明了五气气或无极里对日本新作源的影响。本研究还对历法文化在日本古代的发展和渗透，特别是与政治、经济、社会阶段的关系以及阴阳师的影响进行了概述，并得出了一些相关的研究成果。

This research reveals the changing of rule of Shinsakugen or border time of postponement of first day on the month and gives the revised tables of calendar first day on the month in Tang and during the enforced period of Daienreki or Dayan-li calendar in ancient Japan. This also clarifies the influence of Gokireki or Wuji-li on Shinsakugen in Japan. This research also gives the survey of development and infiltration of culture of calendar, especially relationship with politics,economy or social stages and the influence of Onmyodo in ancient Japan.In addition this research gets several results of related matters.