You have a choice if you want to type your answers, toggle the keyboard on, if not, use the word tile,
Disagree with the 'la 'ehia' choice. Was always taught that meant the date; not the day.
Here are 2 giving their take on Lā ʻehia and Pōʻahia. If going by that than one can use ʻO ka lā ʻehia ka lānui? or ʻO ka pōʻahia ka lānui? depending on if you want to know the specific name of the day https://forum.duolingo.com/comment/30110956/ka-l%C4%81-%CA%BBehia-P%C5%8D%CA%BBahia
ʻO ka lā ʻehia ka lānui?
ʻO ka lā ʻelua o Malaki ka lānui. = The holiday is March second.
Iʻll ask some of the Hawaiian language kumu I know in the UH system for their take on it
What date is the day of the wedding? Nope, you're right. Even with an object it doesn't make sense in English.
Question: in normal speech (mine, anyway) I used "On what date is the holiday?" and was scored a incorrect. And after reading all the comments here I'm wondering whether the "on" or the "date" 2 the error. Looks like I just need to learn to outguess DL better.