Time & Date
Telling Time Days of the week Calendar Days Calendar Month Calendar Years Within X time After X time
Time
1/7
Telling Time
-ji, -fun / pun

Hours

NumberKanjiRomaji
1一時ichiji
2二時niji
3三時sanji
4四時yoji
5五時goji
6六時rokuji
7七時shichiji
8八時hachiji
9九時kuji
10十時jūji
11十一時jūichiji
12十二時jūvniji

Minutes

NumberKanjiRomaji
1一分ippun
2二分nifun
3三分sanfun
4四分yonfun
5五分gofun
6六分roppun
7七分nanafun
8八分happun
9九分kyuufun
10十分juppun
15十五分jūgofun
30三十分sanjuppun
Halfhan

Use gozen (午前) for morning and gogo (午後) for evening.

The use of morning and evening is not necessary unless it's ambiguous.

ごじ じゅうごふん
goji juugofun
5:15

さんじはん
gogo sanji han
3:30 PM

しちじ よんじゅうはっぷん
gozen shichiji yonjuu happun
7:48 AM

Time
2/7
Days of the week
-yōbi

Days of the week all end with -yōbi. Each day references a celestial/elemental symbol in kanji.

DayKanjiElementHiragana
Monday曜日Moongetsuyōbi
Tuesday曜日Firekayōbi
Wednesday曜日Watersuiyōbi
Thursday曜日Woodmokuyōbi
Friday曜日Gold / Metalkinyōbi
Saturday曜日Earthdoyōbi
Sunday曜日Sunnichiyōbi

In Japanese, you don't pluralize days of week.

Use まいしゅう for recurrent events. Every monday = まいしゅう げつようび

月曜日に学校が始まります。
Getsuyōbi ni gakkō ga hajimarimasu.
School starts on Monday.

Date
3/7
Calendar Days
-ka, -nichi

Days from 1 to 10 have many irregulars. They are built in a similar way as the counting words for -tsu, except for the 1st day.

1tsuitachi
2futsuka
3mikka
4yokka
5itsuka
6muika
7nanoka
8yooka
9kokonoka
10tooka

The rest of the days are built using regular numbers by adding -nichi at the end but have a few exceptions on -4, -7, -9 and 20.

11 (reg.)jū-ichi-nichi
14 / 24jū-yokka / nijuu-yokka
17 / 27jū-shichi-nichi / nijū-shichi-nichi
19 / 29jū-ku-nichi / nijū-ku-nichi
20hatsuka
  • When building a sentence, the day comes after the month and the year.

今日は一日です。
Kyō wa tsuitachi desu.
Today is the first of the month.

私の誕生日は三日です。
Watashi no tanjōbi wa mikka desu.
My birthday is on the 3rd.

二十二日は空いています。
Nijūni-nichi wa aiteimasu.
I’m free on the 22nd.

Date
4/7
Calendar Month
-gatsu, -getsu

Japanese months are built using the number of the month with -gatsu, it has few irregulars, specifically April.

MonthJapaneseRomaji
January一月ichigatsu
February二月nigatsu
March三月sangatsu
April四月shigatsu
May五月gogatsu
June六月rokugatsu
July七月shichigatsu
August八月hachigatsu
September九月kugatsu
October十月jūgatsu
November十一月jūichigatsu
December十二月jūnigatsu

Sometimes -getsu is used with time-related expression such as "next month" or "this month".

七月に海に行きます。
Shichigatsu ni umi ni ikimasu.
I'm going to the beach in July.

十二月にクリスマスを祝います。
Jūnigatsu ni Kurisumasu o iwaimasu.
We celebrate Christmas in December.

私は1995年11月16日生まれです。
Watashi wa sen kyuuhyaku juukyu san-nen jūichigatsu jūroku-nichi umare desu.
I was born on November 16th, 1993.

Date
5/7
Calendar Years
-nen

Years are by far the easiest to build. Simply add -nen to the number.

2000年
にせんねん
nisen-nen

1995年
せんきゅうひゃくきゅうじゅうごねん
sen kyūhyaku kyūjūgo-nen

Counting Time
6/7
Within X time
-de

Used when you're talking about:

  • How long something takes
  • Within what time frame something is completed

For hours, days, weeks and months, you must add -kan at the end of the time expression.

2時間で
nijikan de
in two hours

30秒終わります。
Sanjuu-byō de owarimasu.
It’ll be done in 30 seconds.

8日間覚えました。
Yōkakan de oboemashita.
I learned it in 8 days.

Counting Time
7/7
After X time
-go

Used when you're talking about:

  • Something that will happen later
  • Waiting time before something happens

For hours, weeks and months, you must add -kan at the end of the time expression.

Not for days.

2週間にテストがあります。
Nishūkan go ni tesuto ga arimasu.
There's a test in 2 weeks.

5分に出発します。
Gofun go ni shuppatsu shimasu.
 We'll leave in 5 minutes.