Question:
Hello,
Is today Yom kippur Katan? Is it the last day of Nisan? What is required for women?
Answer:
Yes, today, the day before Rosh Chodesh is Yom Kippur Katan. women and almost all men do not fast. If there is a shul in your area that says Yom kippur katan, you can join them for mincha.
Best wishes