Japanese phrase
今日は何曜日ですか？ kyō wa nan yō bi de su ka
Meaning
What day of the week is it today?
When to use it
Seeks the name of today's weekday. The polite form sounds natural when the speaker has momentarily lost track of the day and wants a quick confirmation.
Example dialogue
あれ、今日は何曜日ですか？ a re kyō wa nan yō hi de su ka
Wait, what day of the week is it today?
火曜日ですよ。 ka yō hi de su yo
It is Tuesday.