tomorrow    ejo (lit. 'the other day', therefore also: yesterday)
(day after ~) hīrya y'ējo
En-En dictionary 
yesterday    ejo (lit. 'the other day', therefore also: tomorrow)
(day before ~) hīrya y'ējo, juzi
En-En dictionary 
hīrya y'ējo     phr    1. day before yesterday, 2. day after tomorrow
ejo     adv    1. yesterday, 2. tomorrow (lit. the other day)
n'ah ejo   phr    See you tomorrow
day    umusi, umunsi
(~ before yesterday, ~ after tomorrow) hirya y'ejo
(it is ~) harakeye
(on a certain ~) umusi ur'izina, umunsi ur'izina
(the next ~) bukeye
(today) uyumusi, uyumunsi
(time of day) :
(9 to 10 a.m.) kumusase
(noon) umutāga, ku mamima ngohe
(middle of day) amashōka
(about 3 p.m.) amasubirayo y'inyana
(after dark) bwateranye
(to be ~) guca
(to spend all ~) kwīrirwa
(to start the ~) kuramuka
En-En dictionary 
 tomorrow found in: Kirundi I (Study lessons)
lesson 29   Future Tense
lesson 30   Review 21 - 29
lesson 31   Negative of Future
lesson 32   Class 9 uku–, ama–
lesson 36   Far Future and Present Negative of Vowel-stem Verbs
lesson 62   Months, Days of the Week, Telling Time
lesson 102   Miscellaneous Words
lesson 114   Quotations, Direct and Indirect
 tomorrow found in: Kirundi II (Grammar)
chapter 10   –o– Conditional in Present, Past and Future
chapter 11   Subjunctive and Imperative
chapter 23   Future and Negative Infinitives
chapter 79   Various Expressions