Spring / Autumn 2024 Months. According to the farmer's almanac, the exact time of the autumnal equinox in the northern hemisphere is 8: For the north hemisphere, the fall starts in the month of september.
— spring begins on march 19 in 2024. — the spring and fall equinox will stay on march 20 and september 22 until 2027, when the fall equinox moves to september 23 for that year.