On what date did Last Week Tonight with John Oliver first air on HBO?

Last Week Tonight with John Oliver first aired on HBO on April 27, 2014. The program was developed as a weekly satirical news show hosted by British comedian John Oliver.

Oliver had previously served as a correspondent and guest host on The Daily Show. The HBO format gave him more time to examine a single topic than a conventional nightly monologue usually allows, leading to long-form pieces about politics, media, law, economics, and international affairs.

Although it is commonly grouped with late-night talk shows, Last Week Tonight is not a nightly program. It generally airs weekly and combines a studio monologue with pre-produced investigative comedy segments.

The title refers to the show’s weekly relationship with current events, not to a claim that it is the final late-night program of the evening. Its premiere date is also distinct from Oliver’s 2013 period as a guest host on The Daily Show.