Japanese dates
Writing the date in Japanese also makes use of the system of numbers and counters. Thus the date is usually written as follows: yyyy年mm月dd日, where 年 is the counter for years, 月 for months and 日 for days. Thus 13 September, 2008 would be written as 2008年9月13日.
Sometimes, instead of the Western year being used, the year of the current Emperor's reign is used. Thus, 2008 could be written as Heisei (平成) 20, or to use the date format above: 平成20年9月13日. To arrive at a Western date, based on a era, you take the commencement date of the era (1989 in the case of Heisei), subtract 1 (as 1989 would be year 1 of Heisei, not year 0) and add the number of years of the era. Thus Heisei 20 = 1989 - 1 + 20 = 2008.
Days of the Week
With the Japanese names for the days of the week, counters are built into the names themselves, with each name being broken down into three parts - the first being the name of the day, the second indicating it is a weekday (you 曜) and the third,bi (日) being the counter for days. The days themselves are named after the Sun and Moon, as well as the five elements - fire, water, metal, earth and wood.
| Weekday | Kanji | Japanese | Meaning |
| Monday | 月曜日 | getsuyoubi | Moon |
| Tuesday | 火曜日 | kayoubi | Fire / Mars |
| Wednesday | 水曜日 | suiyoubi | Water / Mercury |
| Thursday | 木曜日 | mokuyoubi | Wood/ Jupiter |
| Friday | 金曜日 | kinyoubi | Metal / Venus |
| Saturday | 土曜日 | doyoubi | Earth / Saturn |
| Sunday | 日曜日 | nichiyoubi | Sun |
Months of the Year
Although there are Japanese names for each month of the year, in recent times, they have taken a far more pragmatic approach and simply named each month for its corresponding number. Thus January is ichigatsu (一月) or "first month". The table below sets out the new and old names for the months of the year.
| Month | Kanji | Current Japanese | Old Japanese | Kanji | Meaning |
| January | 一月 | ichigatsu | mutsuki | 睦月 | Month of Harmony |
| February | 二月 | nigatsu | kisaragi | 如月 | Month of wearing extra layers of clothes |
| March | 三月 | sangatsu | yayoi | 弥生 | Month of growth |
| April | 四月 | shigatsu | uzuki | 卯月 | Month of unohana |
| May | 五月 | gogatsu | satsuki | 早月 | Month of planting rice sprouts |
| June | 六月 | rokugatsu | minazuki | 水無月 | Month of no water |
| July | 七月 | shichigatsu | fumizuki | 文月 | Month of literary |
| August | 八月 | hachigatsu | hazuki | 葉月 | Month of leaves |
| September | 九月 | kugatsu | nagatsuki | 長月 | Autumn long month |
| October | 十月 | juugatsu | kannazuki | 神無月 | Month of no gods |
| November | 十一月 | juuichigatsu | shimotsuki | 霜月 | Month of frost |
| December | 十二月 | juunigatsu | shiwasu | 師走 | Month of running priests |