Eighteenth Dynasty of Egypt in the context of "New Kingdom of Egypt"

Egyptian astronomy started in prehistoric times, in the Predynastic Period. In the 5th millennium BCE, the stone circles at Nabta Playa may have made use of astronomical alignments. By the time the historical Dynastic Period began in the 3rd millennium BCE, the 365 day period of the Egyptian calendar was already in use, and the observation of stars was important in determining the annual flooding of the Nile.

The Egyptian pyramids were carefully aligned towards the pole star, and the temple of Amun-Re at Karnak was aligned on the rising of the midwinter Sun. Astronomy played a considerable part in fixing the dates of religious festivals and determining the hours of night, and temple astrologers were especially adept at watching the stars and observing the conjunctions and risings of the Sun, Moon, and planets, as well as the lunar phases.

Pharaoh was a title of the monarch of ancient Egypt used from the Eighteenth Dynasty onwards. The title was subsequently added to all the previous kings of Egypt. Before this Pharaoh was a term that meant more of the kings' administration. The earliest confirmed instance of the title used contemporaneously for a ruler is a letter to Akhenaten (reigned c. 1353–1336 BCE), possibly preceded by an inscription referring to Thutmose III (c. 1479–1425 BCE). Although the title only came into use in the Eighteenth Dynasty during the New Kingdom, scholars today use it for all the rulers of Egypt from the First Dynasty (c. 3150 BCE) until the annexation of Egypt by the Roman Republic in 30 BCE.

In the early dynasties, ancient Egyptian kings had as many as three titles: the Horus, the Sedge and Bee (nswt-bjtj), and the Two Ladies or Nebty (nbtj) name. The Golden Horus and the nomen titles were added later.

Egyptology (from Egypt and Greek -λογία, -logia; Arabic: علم المصريات) is the scientific study of ancient Egypt, including historic artifacts and ancient writing. The topics studied include ancient Egyptian history, language, literature, religion, architecture, culture and art from the 5th millennium BC until the end of its native religious practices in the 4th century AD.

Ramesses II (/ˈræməsiːz, ˈræmsiːz, ˈræmziːz/; Ancient Egyptian: rꜥ-ms-sw, Rīꜥa-masē-sə, Ancient Egyptian pronunciation: [ɾiːʕamaˈseːsə]; c. 1303 BC – 1213 BC), commonly known as Ramesses the Great, was the third pharaoh of the Nineteenth Dynasty of Egypt. Along with Thutmose III of the Eighteenth Dynasty, he is often regarded as the greatest, most celebrated, and most powerful pharaoh of the New Kingdom, which itself was the most powerful period of ancient Egypt. He is also widely considered one of ancient Egypt's most successful warrior pharaohs, conducting no fewer than 15 military campaigns, all resulting in victories, excluding the Battle of Kadesh, which is generally considered a stalemate. His 66-year rule was also the longest recorded reign of any pharaoh (and one of the longest in history), possibly alongside Pepi II, who lived 1000 years earlier and is said to have reigned for 90 years.

In ancient Greek sources, he is called Ozymandias, derived from the first part of his Egyptian-language regnal name: Usermaatre Setepenre. Ramesses was also referred to as the "Great Ancestor" by successor pharaohs.

Thutmose I (sometimes read as Thutmosis or Tuthmosis I, Thothmes in older history works in Latinized Greek; meaning "Thoth is born") was the third pharaoh of the 18th Dynasty of Egypt. He received the throne after the death of the previous king, Amenhotep I. During his reign, he campaigned deep into the Levant and Nubia, pushing the borders of Egypt farther than ever before in each region. He also built many temples in Egypt, and a tomb for himself in the Valley of the Kings; he is the first king confirmed to have done this (though Amenhotep I may have preceded him).

Thutmose I's reign is generally dated to 1506–1493 BC, but a minority of scholars—who think that astrological observations used to calculate the timeline of ancient Egyptian records, and thus the reign of Thutmose I, were taken from the city of Memphis rather than from Thebes—would date his reign to 1526–1513 BC. He was succeeded by his son Thutmose II, who in turn was succeeded by Thutmose II's sister, Hatshepsut.

The ancient Egyptian calendar – a civil calendar – was a solar calendar with a 365-day year. The year consisted of three seasons of 120 days each, plus an intercalary month of five epagomenal days treated as outside of the year proper. Each season was divided into four months of 30 days. These twelve months were initially numbered within each season but came to also be known by the names of their principal festivals. Each month was divided into three 10-day periods known as decans or decades. It has been suggested that during the Nineteenth Dynasty and the Twentieth Dynasty the last two days of each decan were usually treated as a kind of weekend for the royal craftsmen, with royal artisans free from work.

Because this calendrical year was nearly a quarter of a day shorter than the solar year, the Egyptian calendar lost about one day every four years relative to the Julian calendar. It is therefore sometimes referred to as the wandering year (Latin: annus vagus), as its months rotated about one day through the solar year every four years. Ptolemy III's Canopus Decree attempted to correct this through the introduction of a sixth epagomenal day every four years but the proposal was resisted by the Egyptian priests and people and abandoned until the decree by Augustus in 25 BC that established the Alexandrian or Coptic calendar. The introduction of a leap day to the Egyptian calendar made it equivalent to the Julian calendar, although (like the latter) it continues to diverge from the Gregorian calendar at the turn of most centuries.

The Karnak Temple Complex, commonly known as Karnak (/ˈkɑːr.næk/), comprises a vast mix of temples, pylons, chapels, and other buildings near Luxor, Egypt. Construction at the complex began during the reign of Senusret I (reigned 1971–1926 BC) in the Middle Kingdom (c. 2000–1700 BC) and continued into the Ptolemaic Kingdom (305–30 BC), although most of the extant buildings date from the New Kingdom. The area around Karnak was the ancient Egyptian Ipet-isut ("The Most Selected of Places") and the main place of worship of the 18th Dynastic Theban Triad, with the god Amun as its head.

It is part of the monumental city of Thebes, and in 1979 it was added to the UNESCO World Heritage List along with the rest of the city. Karnak gets its name from the nearby, and partly surrounded, modern village of El-Karnak, 2.5 kilometres (1.6 miles) north of Luxor.