Since 2011, latitude and longitude of places in Reki Yoko have been adjusted to those in Local Calendar. History of the adopted values are as follows.
| City | Year | Long. | Lat. | Note |
|---|---|---|---|---|
| Naha | 2011- | 127° 40' | 26° 13' | World Geodetic System (Local Calendar; Height = 0) |
| 2004-2010 | 127° 43' 53.5" | 26° 13' 05.1" | World Geodetic System (Bengadake, Naha; Height = 165.6m) | |
| 2002-2003 | 127° 44' 00.2" | 26° 12' 51.0" | Tokyo Datum (same as above) | |
| Fukuoka | 2011- | 130° 24' | 33° 35' | World Geodetic System (Local Calendar; Height = 0) |
| 2004-2010 | 130° 25' 31.9" | 33° 37' 36.9" | World Geodetic System (Former observatory of Kyushu University; Height = 11.0m) | |
| -2003 | 130° 25' 40.3" | 33° 37' 25.1" | Tokyo Datum (same as above) | |
| Kyoto | 2011- | 135° 45' | 35° 01' | World Geodetic System (Local Calendar; Height = 0) |
| 2004-2010 | 135° 47' 36.0" | 34° 59' 37.9" | World Geodetic System (45cm telescope in Kazan Observatory; Height = 233.7m) | |
| 1964-2003 | 135° 47' 46.2" | 34° 59' 26.3" | Tokyo Datum (30cm telescope in Kazan Observatory; Height = 233.7m) | |
| -1963 | 135° 47' 45.3" | 34° 59' 26.5" | Tokyo Datum (30cm telescope in Kazan Observatory; Height = 222m) | |
| Mitaka | 1965-1990 | 139° 32' 23.8" | 35° 40' 15.7" | Tokyo Datum (65cm telescope in Tokyo Observatory; Height = 68.2m) |
| Tokyo | 2013- | 139° 44' 28.8869" | 35° 39' 29.1572" | World Geodetic System (Former Great Transit Instrument in Tokyo Observatory located in Azabu; Height = 0) |
| 2011-2012 | 139° 44' 28.8759" | 35° 39' 29.1572" | World Geodetic System(same as above) | |
| 2004-2010 | 139° 44' 29.27" | 35° 39' 27.7" | World Geodetic System (Former Great Transit Instrument in Tokyo Observatory located in Azabu; Height = 25.0m) | |
| -2003 | 139° 44' 40.9" | 35° 39' 16.0" | Tokyo Datum (same as above) | |
| Sendai | 2011- | 140° 52' | 38° 16' | World Geodetic System (Local Calendar; Height = 0) |
| 2004-2010 | 140° 50' 21.1" | 38° 15' 36.8" | World Geodetic System (Transit Instrument in Tohoku University; Height = 153.0m) | |
| 1986-2003 | 140° 50' 33.4" | 38° 15' 26.1" | Tokyo Datum (same as above) | |
| -1985 | 140° 52' 33.1" | 38° 15' 03.8" | Tokyo Datum (Telescope in Tohoku University; Height = 36.4m) | |
| Sapporo | 2011- | 141° 21' | 43° 04' | World Geodetic System (Local Calendar; Height = 0) |
| 2004-2010 | 141° 21' 10.2" | 43° 02' 43.8" | World Geodetic System (20cm telescope in Sapporo City Observatory; Height = 33m) | |
| 1964-2003 | 141° 21' 23.5" | 43° 02' 35.0" | Tokyo Datum (same as above) | |
| -1963 | 141° 20' 42.0" | 43° 04' 28.0" | Tokyo Datum (11cm reflecting telescope in Hokkaido University) |
National holidays in Japan have been changed from time to time by the revision of Act on National Holidays. Some changes could not be reflected since the announcement of Reki Yoko always comes one year ahead.
| promulgation (enforcement) | summary | Reki Yoko |
|---|---|---|
| July 20th, 1948 (same day) | Act on National Holidays; Abolition of the Imperial decree 25, 1927; Total number of holidays is 9. | |
| June 25th, 1966 (same day) | Added "Kenkoku Kinen no Hi" which is on the day provided by cabinet order; Added "Keirou no Hi" which is on September 15th; Added "Taiiku no Hi" which is on October 10th. | since 1968 (Reki Yoko 1966 and 1967 were already announced.) |
| December 9th, 1966 (same day) | Decided the date of "Kenkoku Kinen no Hi" as February 11th. | As above |
| April 12th, 1973 (same day) | Added Article 3 paragraph 2; If a national holiday falls upon Sunday, The next day becomes a holiday. | since 1989 |
| December 27th, 1985 (same day) | Added Article 3 paragraph 3; A non national holiday sandwiched by two National holidays becomes a holiday. | since 1989 |
| February 17th, 1989 (same day) | Changed the date of "Tennou Tanjou Bi" from April 29th to December 23rd; Added "Midori no Hi" which is on April 29th. | Separately announced National Holidays in February 28th, 1989. |
| March 8th, 1995 (January 1st, 1996) | Added "Umi no Hi" on July 20th. | since 1997 (Reki Yoko 1996 was already announced.) |
| October 21st, 1998 (January 1st, 2000) | Changed the date of "Seijin no Hi" from January 15th to 2nd Monday in January; Changed the date of "Taiiku no Hi" from October 10th to 2nd Monday in October. | since 2000 |
| June 22nd, 2001 (January 1st, 2003) | Changed the date of "Umi no Hi" from July 20th to 3rd Monday in July; Changed the date of "Keirou no Hi" from September 15th to 3rd Monday in September. | since 2003 |
| May 20th, 2005 (January 1st, 2007) | Changed the date of "Midori no Hi" from April 29th to May 4th; Added "Shouwa no Hi" which is on April 29th; Revised Article 3 paragraph 2 and 3. | since 2007 |
| May 30th, 2014 (January 1st, 2016) | Added "Yama no Hi" which is on August 11th. | since 2016 |
| June 16th, 2017 (May 1st, 2019) | Changed the date of "Tennou Tanjou Bi" from December 23rd to February 23rd. | since 2020 |
| June 20th, 2018 (January 1st, 2020) | Renamed "Taiiku no Hi" to "Sports no Hi". Exclusively in 2020, the date of "Umi no Hi" becomes July 23rd which is the day before the opening ceremony of the Tokyo Olympic Games, the date of "Sports no Hi" becomes July 24th which is the day of the opening ceremony, and the date of "Yama no Hi" becomes August 10th which is the day after the closing ceremony. |
since 2020 |
| December 4th, 2020 (December 28th, 2020) | Exclusively in 2021, the date of "Umi no Hi" becomes July 22nd which is the day before the opening ceremony of the Tokyo Olympic Games, the date of "Sports no Hi" becomes July 23rd which is the day of the opening ceremony, and the date of "Yama no Hi" becomes August 8th which is the day of the closing ceremony. | updated web version of Reki Yoko 2021 |
Old terms describing the circumstances for solar and lunar eclipse used before Reki Yoko 1970 are as follows.
| Meaning | Eclipse begins | Total eclipse begins | Greatest eclipse | Total eclipse ends | Eclipse ends |
|---|---|---|---|---|---|
| 1971- | 食の始め | 皆既の始め | 食の最大 | 皆既の終り | 食の終り |
| -1970 | 初虧 | 食既 | 食甚 | 生光 | 復円 |