Circa (from Latin, meaning "around"), usually abbreviated c. or ca. (also circ. or cca.), means "approximately" in the English language, usually referring to a date. Circa is widely used in genealogy and historical writing when the dates of events are not precisely known.

When used in date ranges, the term "circa" is applied before each approximate date, while dates without "circa" immediately preceding them are generally assumed to be known with certainty.

Examples:

Enrique Iglesias (born Enrique Miguel Iglesias Preysler; May 8, 1975) is a Spanish singer, songwriter and occasional actor, popular in both the Latin market and the Hispanic American market in the United States. He is the son of the famous Spanish singer Julio Iglesias. Within five years of beginning his musical career in the 1990s, he became the biggest seller of Spanish-language albums of that decade. He made his crossover into the mainstream English language market before the turn of the millennium, signing a multi-album deal with Universal Music Group for an unprecedented US$50,000,000 with Universal Music Latino to release his Spanish albums and Interscope to release English albums. In 2010, he parted with Interscope and signed with another Universal Music Group label, Universal Republic.

Iglesias has sold over 100 million records worldwide, making him one of the best selling Spanish language artists of all time. He has had five Billboard Hot 100 top five singles, including two number-ones, and holds the record for producing 22 number-one Spanish-language singles on the Billboard's Hot Latin Tracks. He has also had ten number-one songs on Billboard's Dance charts, more than any other single male artist. Altogether, Iglesias has amassed 55 number-one hits on the various Billboard charts. Billboard has called him The King of Latin Pop and The King of Dance. Billboard also named Enrique the number two Latin artist of the years 1986–2011 (Luis Miguel taking the first spot).

Justin Randall Timberlake (born January 31, 1981) is an American singer, actor, and businessman. He achieved early fame when he appeared as a contestant on Star Search, and went on to star in the Disney Channel television series The New Mickey Mouse Club, where he met future bandmate JC Chasez. Timberlake became famous in the late 1990s as the lead singer and youngest member of the boy band 'N Sync, whose launch was financed by Lou Pearlman.

In 2002, he released his debut solo album, Justified, which sold more than seven million copies worldwide. The album was a commercial success, spawning the hits "Cry Me a River" and "Rock Your Body". Timberlake continued his success with his second solo album, FutureSex/LoveSounds (2006), debuting at number one on the Billboard 200 chart, and produced the US number-one hit singles "SexyBack", "My Love", and "What Goes Around... Comes Around".

Timberlake has won six Grammy Awards and four Emmy Awards. His first two albums made him one of the most commercially successful singers in the world, each selling in excess of 7 million copies. He also has an acting career, having starred in films such as The Social Network, Bad Teacher and Friends with Benefits. His other ventures include record label Tennman Records, fashion label William Rast, and the restaurants Destino and Southern Hospitality.