Dax implicitly converts strings to dates, but this is better.

You can confirm this by making a new DAX table.

{ 
    dt"2024-06-06", 
    date(2024, 07, 07)   time(1, 1, 1) 
}

If you use a string "2024-06-06" your column's datatype becomes string

Valid Syntaxes

dt"YYYY-MM-DD"
dt"YYYY-MM-DDThh:mm:ss"
dt"YYYY-MM-DD hh:mm:ss"

If you use the dt prefix, like dt"2024-06-06" -- the column's datatype is a real datetime

You can use this to simplify your code when it's using static values. This is from: https://learn.microsoft.com/en-us/dax/dax-syntax-reference#data-types

FILTER (
    FactInternetSales,
    [OrderDate] > (DATE(2015,1,9)   TIME(2,30,0)) && [OrderDate] < (DATE(2015,12,31)   TIME(11,59,59))
)

is equivalent to

FILTER (
    FactInternetSales,
    [OrderDate] > dt"2015-1-9T02:30:00" && [OrderDate] < dt"2015-12-31T11:59:59"
)

see more:

• https://learn.microsoft.com/en-us/dax/date-function-dax#remarks
• https://powerbi.microsoft.com/en-my/blog/power-bi-report-server-september-2021-feature-summary/