Quintilis

In the ancient Roman calendar, Quintilis or Quinctilis[1] was the month following Junius (June) and preceding Sextilis (August).

[2] Quintilis was under the guardianship (tutela) of the Romans' supreme deity Jupiter, with sacrifices made particularly to Neptune and Apollo.

Each day was marked with a letter such as F for dies fasti, days when it was legal to initiate action in the courts of civil law; C, for dies comitalis, a day on which the Roman people could hold assemblies (comitia), elections, and certain kinds of judicial proceedings; N for dies nefasti, when these political activities and the administration of justice were prohibited; or NP, the meaning of which remains elusive, but which marked feriae, public holidays.

During the Imperial period, some of the traditional festivals localized at Rome became less important, and the birthdays and anniversaries of the emperor and his family gained prominence as Roman holidays.

On the calendar of military religious observances known as the Feriale Duranum, sacrifices pertaining to Imperial cult outnumber the older festivals.

July panel from a Roman mosaic of the months (from El Djem, Tunisia, first half of 3rd century AD)
Drawing of the fragmentary Fasti Antiates , a pre-Julian calendar showing Quintilis (abbreviated QUI ) at the top of the seventh column