Sunday is the day of the week between Saturday and Monday. Sunday is a day of rest in most Western countries and a part of the weekend. In some Middle Eastern countries, Sunday is a weekday.
A depiction of Máni, the personified Moon, and his sister Sól, the personified Sun, from Norse mythology (1895) by Lorenz Frølich.
In the United States, National Football League games are usually played on Sunday
Sol Iustitiae (Sun of Righteousness), derived from the Judeo-Christian Bible, Malachi 4:2. By Albrecht Dürer, c. 1499/1500
A week is a unit of time equal to seven days. It is the standard time period used for short cycles of days in most parts of the world. The days are often used to indicate common work days and rest days, as well as days of worship. Weeks are often mapped against yearly calendars, but are typically not the basis for them, as weeks are not based on astronomy.
An Italian cameo bracelet representing the days of the week by their eponymous deities (mid-19th century, Walters Art Museum)
Circular diagrams showing the division of the day and of the week, from a Carolingian ms. (Clm 14456 fol. 71r) of St. Emmeram Abbey. The week is divided into seven days, and each day into 24 hours, 96 puncta (quarter-hours), 240 minuta (tenths of an hour) and 960 momenta (40th parts of an hour).
Soviet calendar, 1930. Five colors of five-day work week repeat.
Soviet calendar, 1933. Rest day of six-day work week in blue.