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Yesterday is not one spelling in words.hk. 尋日 and 噚日 are cam4 jat6, with a lazy-initial variant cam4 mat6. 琴日 and 禽日 are kam4 jat6 and kam4 mat6. All four are glossed as yesterday. Calling 琴日 a misspelling contradicts the entry: the character 琴 is kam4 on its own, so a converter that sees 琴 will produce k. If you want the c initial, write 尋 or 噚.

Last night splits the same way. 尋晚 and 噚晚 are cam4 maan5. 琴晚 is kam4 maan5. Playback prepared only for 尋晚 and 尋日 is the cam4 set. A sign or a message that actually writes 琴晚 has to be read with kam4.

“Now” is also more than one word. 而家 is ji4 gaa1 and 依家 is ji1 gaa1, filed together, both “this moment”. 頭先 is tau4 sin1; reversed, 先頭 is sin1 tau4, “a short time ago”. 啱啱 ngaam1 ngaam1 has two senses. One is “exactly”, as in the example about a year to the day. The other is “just now”, someone has just left. Only the second overlaps with 頭先.

陣間 has no entry of its own. It appears in the “see also” list on 等陣, and that URL does not open. to-jyutping gives zan6 gaan1. The neighbour that does exist is 等陣 dang2 zan6: one sense is “a short while later”, the other is “hang on”. 一陣 is jat1 zan6, also jat1 zan2, a stretch you would measure in minutes. All three sit near “in a bit”, and they are not the same length or the same tone of voice. 家陣 gaa1 zan2 comes back to “now”. words.hk says it is usually there to stress what should or should not be done at this moment.

This morning is 今朝 gam1 ziu1, with 今早 as a synonym. 今日 is gam1 jat6, alongside gam1 mat6. 晏晝 is aan3 zau3: noon, sometimes stretched until dark. to-jyutping also lists ngaan3 for the character 晏. The compound entry uses aan3, without the ng, which is what you hear in the street. 今晚 allows both gam1 maan5 and gam1 maan1; the example uses maan1.

聽日 is tomorrow, ting1 jat6. This 聽 is ting1. to-jyutping also has teng1 for 聽 in the sense “hear”, and that reading does not transfer. 聽朝 is ting1 ziu1, defined outright as tomorrow morning. 前日 cin4 jat6 is the day before 尋日. 後日 hau6 jat6 is the day after 聽日.

The year words are where the tone breaks up. 今年 is both gam1 nin4 and gam1 nin2, and the example uses nin2. 舊年 is only gau6 nin2. 出年 is ceot1 nin2, with 明年 listed as a synonym. The phrase 等到出年 is glossed as having to wait a while, beyond simply the next calendar year.

Rescheduling a clinic visit tends to land on 聽朝 or 聽日; see the clinic. Counting days around a tropical-cyclone signal is in typhoon weather.

Sources

• LSHK Jyutping scheme
• CanCLID to-jyutping
• words.hk: 尋日, 尋晚, 而家, 頭先, 啱啱, 等陣, 一陣, 家陣, 今朝, 今日, 晏晝, 今晚, 聽日, 聽朝, 前日, 後日, 今年, 舊年, 出年