This parchment manuscript of the Menaion for June–August with synaxarion (a collection of brief biographies of the saints) can be dated to the second half of the 13th century. It is important as the earliest known manuscript to include the service of Saint Ioakim Osogovski (Joachim of Osogovo), hermit and founder of the monastery known as Sarandapor. His memory, celebrated on August 16, was popular in Bulgaria and elsewhere in the Balkans during the Middle Ages and in the period of the Bulgarian National Revival of the 18th and 19th centuries. The manuscript most likely originated in the monastery of Saint Ioakim Osogovski-Sarandapor (located in the present-day Former Yugoslav Republic of Macedonia). The beginning and the end of the codex are missing.