Mass. Gen. Laws ch. 278 § 10
Current with Act changes effective as of September 9, 2024
If a crime is alleged to have been committed in the night time, night time shall be deemed the time between one hour after sunset on one day and one hour before sunrise on the next day; and the time of sunset and sunrise shall be ascertained according to mean time in the place where the crime was committed.
Mass. Gen. Laws ch. 278, § 10