Pregnancy / Parenting #218 ์์ ์ฃผ์ ๊ณ์ฐ๊ธฐ Estimate pregnancy week and day from a reference date.
Pregnancy / Parenting #219 ์ถ์ฐ ์์ ์ผ ๊ณ์ฐ๊ธฐ Estimate expected delivery date from last period or conception date.