The "Jōkyō-reki" system was the work of Shibukawa Shunkai. He recognized that the length of the solar year is 365.2417 days.
ð ə WORD_BOUNDARY d̠ʒ ɑ k aɪ oʊ ɹ ɪ k i WORD_BOUNDARY s ɪ s t ə m WORD_BOUNDARY w ʌ z ð ə WORD_BOUNDARY w ɜː k WORD_BOUNDARY ʌ v WORD_BOUNDARY ʃ ɪ b j uː k ɑ w ə WORD_BOUNDARY ʃ ʌ ŋ k aɪ WORD_BOUNDARY h iː WORD_BOUNDARY ɹ ɛ k ə ɡ n aɪ z d WORD_BOUNDARY ð æ t ð ə WORD_BOUNDARY l ɛ ŋ θ WORD_BOUNDARY ʌ v ð ə WORD_BOUNDARY s oʊ l ə ɹ WORD_BOUNDARY j ɪ ɹ WORD_BOUNDARY ɪ z WORD_BOUNDARY θ ɹ iː h ʌ n d ɹ ɪ d WORD_BOUNDARY s ɪ k s t i WORD_BOUNDARY f aɪ v WORD_BOUNDARY t uː WORD_BOUNDARY θ aʊ z ə n d WORD_BOUNDARY f ɔ ɹ h ʌ n d ɹ ɪ d WORD_BOUNDARY s ɛ v ə n t iː n WORD_BOUNDARY d eɪ z WORD_BOUNDARY