Reki Yoko Heisei 18 (2006)
February 1st, 2005, announced by NAOJ
National Holidays Heisei 18 (2006)
| Name | Date |
| Ganjitsu | January 1st |
| Seijin no Hi | January 9th |
| Kenkoku Kinen no Hi | February 11th |
| Shunbun no Hi | March 21st |
| Midori no Hi | April 29th |
| Kenpou Kinen Bi | May 3rd |
| Kodomo no Hi | May 5th |
| Name | Date |
| Umi no Hi | July 17th |
| Keirou no Hi | September 18th |
| Shuubun no Hi | September 23rd |
| Taiiku no Hi | October 9th |
| Bunka no Hi | November 3rd |
| Kinrou Kansha no Hi | November 23rd |
| Tennou Tanjou Bi | December 23rd |
January 2nd, May 4th are holidays.
Dates of Sundays Heisei 18 (2006)
| Month | Dates |
| January | 1 | 8 | 15 | 22 | 29 |
| February | 5 | 12 | 19 | 26 | |
| March | 5 | 12 | 19 | 26 | |
| April | 2 | 9 | 16 | 23 | 30 |
| May | 7 | 14 | 21 | 28 | |
| June | 4 | 11 | 18 | 25 | |
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| Month | Dates |
| July | 2 | 9 | 16 | 23 | 30 |
| August | 6 | 13 | 20 | 27 | |
| September | 3 | 10 | 17 | 24 | |
| October | 1 | 8 | 15 | 22 | 29 |
| November | 5 | 12 | 19 | 26 | |
| December | 3 | 10 | 17 | 24 | 31 |
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