Question: On what date was the battle where Muhammad Shobran was born?

Knowledge 1: Muhammad Shobran
Muhammad Shobran (born July 6, 1983 in Palembang, South Sumatra) is an Indonesian footballer that currently plays for Sriwijaya in the Indonesia Super League. [SEP] Knowledge 2: Battle of Palembang
The Battle of Palembang was a battle of the Pacific theatre of World War II. It occurred near Palembang, on Sumatra, on 13–15 February 1942. The Royal Dutch Shell oil refineries at nearby Pladju (or Pladjoe) were the major objectives for the Empire of Japan in the Pacific War, because of an oil embargo imposed on Japan by the United States, the Netherlands, and the United Kingdom. With the area's abundant fuel supply and airfield, Palembang offered significant potential as a military base to both the Allies and the Japanese.
Knowledge 1: Muhammad Shobran
Muhammad Shobran (born July 6, 1983 in Palembang, South Sumatra) is an Indonesian footballer that currently plays for Sriwijaya in the Indonesia Super League. [SEP] Knowledge 2: Medina
The Battle of Badr was a key battle in the early days of Islam and a turning point in Muhammad's struggle with his opponents among the Quraysh in Mecca. In the spring of 624, Muhammad received word from his intelligence sources that a trade caravan, commanded by Abu Sufyan ibn Harb, Chieftain of the Meccan Quraysh, and guarded by thirty to forty men, was travelling from Syria back to Mecca. Muhammad gathered an army of 313 men, the largest army the Muslims had put in the field yet. However, many early Muslim sources, including the Quran, indicate that no serious fighting was expected, and the future Caliph Uthman ibn Affan stayed behind to care for his sick wife.
Knowledge 1: Ali
Ali was born inside the sacred sanctuary of the Kaaba in Mecca, the holiest place in Islam, to Abu Talib and Fatimah bint Asad. He was the first male who accepted Islam, and, according to some authors, the first Muslim. Ali protected Muhammad from an early age and took part in almost all the battles fought by the nascent Muslim community. After migrating to Medina, he married Muhammad's daughter Fatimah. He was appointed caliph by Muhammad's companions in 656, after Caliph Uthman ibn Affan was assassinated. Ali's reign saw civil wars and in 661, he was attacked and assassinated by a Kharijite while praying in the Great Mosque of Kufa, being martyred two days later.Ali is important to both Shias and Sunnis, politically and spiritually. The numerous biographical sources about Ali are often biased according to sectarian lines, but they agree that he was a pious Muslim, devoted to the cause of Islam and a just ruler in accordance with the Qur'an and the Sunnah. While Sunnis consider Ali the fourth and final of the Rashidun (rightly guided) caliphs, Shia Muslims regard Ali as the first Imam after Muhammad due to their interpretation of the events at Ghadir Khumm. Shia Muslims also believe that Ali and the other Shia Imams (all of whom are from the Ahl al-Bayt, Muhammad's household) are the rightful successors to Muhammad. Ali has also received recognition from a variety of non-Muslim organizations, such as the United Nations and the World Organization for Human Rights, for his governance and social justice. [SEP] Knowledge 2: Battle of Uhud
The battle was fought on Saturday, 22 December 624 (7 Shawwal AH 3 in the Islamic calendar) at the valley located in front of Mount Uhud. It occurred between a force from the Muslim community of Medina led by the Islamic prophet Muhammad, and a force led by Abu Sufyan ibn Harb from Mecca, the town from which many of the Muslims had previously emigrated. The Battle of Uhud was the second military encounter between the Meccans and the Muslims, preceded by the Battle of Badr in 624, where a small Muslim army had defeated a larger Meccan army.

Answer: 15 February 1942