DuckCorp Dico

Found one definition

1.                 From English-日本語 (にほんご) FreeDict+WikDict dictionary ver. 2022.11.18:
                   
   
   
                   
                     
   day //deɪ// <n>
   1. 日, 昼間
   part of a day period which one spends at one's job, school, etc.
   2. 昼, 日
   period between sunrise and sunset
   3. 日, 昼 2.
   period from midnight to the following midnight
    3.
   rotational period of a planet
   4. 日, 一日
   period of 24 hours