Quarter of twelve?
Else clues• About ninety days
• Academic division
• Mix-up: remit rest in a few months (9)
• Obstetrical period
• Part of an academic year
• Period of development
• Pregnancy division
• School term
• Something that goes for a quarter?
• The third one may end in a hospital visit
• One of three divisions of an academic year
• A period of three months
• Especially one of the three three-month periods into which human pregnancy is divided