This is the 621st most frequent Hungarian word.
szerda
Wednesday
Here, "szerda" indicates a specific day of the week.
Szerda van, ezért ma dolgozni kell mennem.
It is Wednesday, so I have to go to work today.
In this sentence, "szerdai" is derived from "szerda" to describe an event occurring on Wednesday.
Mindig várom a szerdai jóga órát.
I always look forward to the Wednesday yoga class.
The use of "szerda" here highlights the personal preference for a specific weekday.