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There are several dating schemes:
-NENGO - Japan's time periods -KANSHI - Chinese import, repeating 60 year cycle -Years since Imperial ascention JIMMU-TENNO, 660 BC NENGO are the changing set of common time periods, originally marking the ascention of a new Emperor. Proclaiming a new time often became politically convenient and the occasion of NENGO was expanded. There has been several changes of habit regarding the reasoning for changing NENGO. There has been 232 NENGO from TAI-KA 645, if counting is inclusive to HEI-SEI 1989. 229 to the MEI-JI 1868. One must remember that the 1st year of a NENGO is the beginning year, so that adding years to dates must give one year to that first NENGO year. For instance, SHO-WA is 1926. Consequently, the third year of SHO-WA is 1928.
NENGO is the most common found date system and is presented for reference both alphabetically and chronologically at the back of these books. 1926 1927 1928 1929 1930 1931 1932 1933 1934 ____ ____ ____ ____ ____ ____ ____ ____ ____ | | | | | | | | | | | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | |____|____|____|____|____|____|____|____|____| SHO-WA Swords making use of NENGO are carried forth in block form much the same as signatures. //////////ARTWORK////////// Show dating block schmatics
Dates KANSHI is a system of time-marking imported from China that comprises a 60 year, repeating cycle of years. This is the "Trunks and Twigs" or "Trees & Branches" cycle. The Five Elements visit us twice as Elder Brother and Younger Brother, hense there are 10, or the "Ten Trunks" JIKKAN, also: "Ten Shields"
KI-no-E Elder Wood KI-no-TO Younger Wood HI-no-E Elder Fire HI-no-TO Younger Fire TSUCHI-no-E Elder Earth TSUCHI-no-TO Younger Earth KA-no-E Elder Metal KA-no-TO Younger Metal MIZU-no-E Elder Water MIZU-no-TO Younger Water JU-NI-SHI, the "Twelve Branches" or "Twelve Twigs" are the 12 signs of the Zodiac: 1st NE Year of the Rat 11PM - 1AM North 2nd USHI Year of the Ox 1AM - 3AM 3rd TORA Year of the Tiger 3AM - 5AM 4th U Year of the Hare 5AM - 7AM East 5th TATSU Year of the Dragon 7AM - 9AM 6th MI Year of the Snake 9AM - 11AM 7th UMA Year of the Horse 11AM - 1PM South 8th HITSUJI Year of the Goat 1PM - 3PM 9th SARU Year of the Monkey 3PM - 5PM 10th TORI Year of the Bird 5PM - 7PM West 11th INU Year of the Dog 7PM - 9PM 12th I Year of the Boar 9PM - 11PM
Put together on a stream of years, the offset of 12 JUNISHI running along with 10 JIKKAN produces the set anew every 60 years ~KInoE NE come together every 60 years~ "Elder Brother of Wood" KInoE NE "The Year of the Rat" | 10 years | | 12 years | KInoE __| |__ NE 10 years | | | 12 years KInoE __| | 10 years |__ NE | | KInoE __| 12 years | 10 years | |__ NE | KInoE __| | 12 years 10 years | | |__ NE See charting in Appendices for all KANSHI and their cross referenced dates. One will also encounter sword dates of some number of years amounting toward 2500 years. 1800 A.D. of the Christian calendar would be 2460 years of Imperial rule. These are most likely referencing the reign of JIMMU-TENNO.