| 242 | A Guide To Reading and Writing Japanese (Florence Sakade) | 
| 157 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) | 
| 308 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) | 
| 438 | A New Dictionary of Kanji Usage | 
| 4707 | Classic Nelson (Andrew Nelson) | 
| 188 | Essential Kanji (P.G. O’Neill) | 
| 92 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) | 
| 2.6 | Japanese for Busy People | 
| 92 | Kanji and Kana (Spahn and Hadamitzky) | 
| 92 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) | 
| 163 | Kanji in Context (Nishiguchi and Kono) | 
| 701 | Kodansha Compact Kanji Guide | 
| 3874 | Kodansha Kanji Dictionary (Jack Halpern) | 
| 1992 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) | 
| 2690 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) | 
| 324 | Les Kanjis dans la tete (Yves Maniette) | 
| 38937P | Morohashi | 
| 3122 | New Japanese English Character Dictionary (Jack Halpern) | 
| 6070 | New Nelson (John Haig) | 
| 318 | Remembering The Kanji (James Heisig) | 
| 340 | Remembering The Kanji, 6th edition (James Heisig) | 
| 206 | Tuttle Kanji Cards (Alexander Kask) | 
      week
    
    - On:
 - シュウ
 
      Jōyō kanji, taught in grade 2
    
    
      JLPT level N4
    
    
      540 of 2500 most used kanji in newspapers
    
Stroke order
On reading compounds
- 週 【シュウ】 week
 - 週明け 【シュウアケ】 beginning of next week (usu. Monday), early next week
 - 前週 【ゼンシュウ】 last week, the week before
 - 隔週 【カクシュウ】 every other week, every two weeks
 
Readings
- Korean:
 - ju
 
Spanish
- semana
 
Portuguese
- semana
 
French
- semaine
 
| 3649 | 2001 Kanji | 
| 2q8.7 | The Kanji Dictionary | 
| 3-3-8 | SKIP code | 
| 3730.2 | Four corner code | 
| 1-29-21 | JIS X 0208-1997 kuten code | 
| 9031 | Unicode hex code | 
日
      Jōyō kanji, taught in grade 1
    
    
      JLPT level N5
    
    
      1 of 2500 most used kanji in newspapers
    
Stroke order
On reading compounds
- 日 【ニチ】 Sunday, nth day (of the month), counter for days, Japan
 - 日時 【ニチジ】 date and time (of a meeting, departure, etc.), days and hours
 - 抗日 【コウニチ】 resistance against Japanese aggression, anti-Japanese (campaign, movement, etc.)
 - 在日 【ザイニチ】 resident in Japan (of a foreigner), situated in Japan (e.g. of an embassy), Zainichi, Zainichi Korean, North or South Korean national with permanent residency in Japan (who came to the country before 1945, or a descendant of such a person)
 - 日月 【ジツゲツ】 sun and moon, time, days and months, years, Sunday and Monday
 - 日外 【ジツガイ】 at one time, some time ago, once
 - 両日 【リョウジツ】 both days, two days
 - 三十日 【ミソカ】 last day of the month
 
Kun reading compounds
- 日 【ひ】 day, days, sun, sunshine, sunlight, (the) day, daytime, daylight, date, deadline, (past) days, time (e.g. of one's childhood), case (esp. unfortunate), event
 - 日陰 【ひかげ】 shade, shadow, sunshine, sunlight
 - 在りし日 【ありしひ】 past days, bygone days, days of yore, the olden days, while still alive, during one's lifetime
 - あくる日 【あくるひ】 next day, following day
 
Readings
- Japanese names:
 - あ、 あき、 いる、 く、 くさ、 こう、 す、 たち、 に、 にっ、 につ、 へ
 
- Korean:
 - il
 
Spanish
- día
 - solar
 - Japón
 - sol
 - rayo de sol
 
Portuguese
- dia
 - sol
 - Japão
 
French
- jour
 - soleil
 - Japon
 - compteur de jours
 
| 11 | A Guide To Reading and Writing Japanese (Florence Sakade) | 
| 13 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) | 
| 62 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) | 
| 1 | A New Dictionary of Kanji Usage | 
| 2097 | Classic Nelson (Andrew Nelson) | 
| 5 | Essential Kanji (P.G. O’Neill) | 
| 56 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) | 
| 77 | Japanese Names (P.G. O’Neill) | 
| 1.A | Japanese for Busy People | 
| 5 | Kanji and Kana (Spahn and Hadamitzky) | 
| 5 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) | 
| 16 | Kanji in Context (Nishiguchi and Kono) | 
| 963 | Kodansha Compact Kanji Guide | 
| 3759 | Kodansha Kanji Dictionary (Jack Halpern) | 
| 1915 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) | 
| 2606 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) | 
| 12 | Les Kanjis dans la tete (Yves Maniette) | 
| 13733 | Morohashi | 
| 3027 | New Japanese English Character Dictionary (Jack Halpern) | 
| 2410 | New Nelson (John Haig) | 
| 12 | Remembering The Kanji (James Heisig) | 
| 12 | Remembering The Kanji, 6th edition (James Heisig) | 
| 3 | The Kanji Way to Japanese Language Power (Dale Crowley) | 
| 33 | Tuttle Kanji Cards (Alexander Kask) | 
| 3878 | 2001 Kanji | 
| 4c0.1 | The Kanji Dictionary | 
| 3-3-1 | SKIP code | 
| 4-4-1 | SKIP code | 
| 6010.0 | Four corner code | 
| 1-38-92 | JIS X 0208-1997 kuten code | 
| 65e5 | Unicode hex code |