Usbuu^c = Week

Ghaddan or Bukrah = Tomorrow

Ams or Imbaari = Yesterday

Learning the days of the week is easy if you remember how to count from 1 to 5.
Just remember that the first day of the week is Sunday.

Waaid        1
Ithnaan         2
Thalaatha      3
Arba^ca         4
Khamsa        5

(Yawm) al-Aad           Sunday (the first day)
(Yawm) al-Ithnayn         Monday (the second day)
(Yawm) ath-Thulathaa'   Tuesday (the third day)
(Yawm) al-Arbi^caa'        Wednesday (the fourth day)
(Yawm) al-Khamiis        Thursday (the fifth day)
(Yawm) al-Jum^cah         Friday (the day of coming together for prayer)
(Yawm) as-Sabt             Saturday (the Sabbath day)