Hi Danleif-7903,
You can use DateTime.DayOfWeek property to get the day of the week represented by this instance.
Please refer to the following code:
var culture = new System.Globalization.CultureInfo("ja-JP");
var day = culture.DateTimeFormat.GetDayName(DateTime.Today.DayOfWeek);
label3.Text = day;
Best Regards,
Daniel Zhang
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