This is the 134th most frequent Polish word.
dzisiaj
"Today."
In this sentence, 'dzisiaj' is used at the beginning of the sentence to emphasize that the described situation pertains to today.
Dzisiaj mam dużo pracy.
Today I have a lot of work.
Here, 'dzisiaj' comes after the verb to specify that the action of the meeting is scheduled for today.
Mam dzisiaj spotkanie o 15:00.
I have a meeting today at 3:00 PM.
In this question, 'dzisiaj' is positioned at the end of the sentence to conclude the inquiry about today's plans.