The digital television transition, also called the digital switchover or analog switch-off (ASO), is the process in which analog television broadcasting is converted to and replaced by digital television. This primarily involves the conversion of analog terrestrial television to digital terrestrial.
https://en.wikipedia.org/wiki/Digital_television_transition
1 Chile: The transition to digital started in 2012, and the switch-off is scheduled for 31 December 2016. 2  Colombia: The government has plans to close down analog broadcast on Sunday, 1 January 2017.
https://en.wikipedia.org/wiki/Digital_television_transition
In March 2008, the FCC requested public comment on turning the bandwidth currently occupied by analog television channels 5 and 6 (76–88 MHz) over to extending the FM broadcast band when the digital television transition was to be completed in February 2009 (ultimately delayed to June 2009).
https://en.wikipedia.org/wiki/DTV_transition_in_the_United_States
The DTV Delay Act changed the mandatory analog cutoff date to June 12, although stations were permitted to cease analog transmissions before the new mandatory cutoff date. The legislation was enacted on February 4, 2009, and on February 11, 2009, President Barack Obama signed it into law.
https://en.wikipedia.org/wiki/DTV_transition_in_the_United_States
1 The transition from analog and digital to digital-only terrestrial signals started on Wednesday 17 October 2007 with the Whitehaven transmitter in Cumbria, and followed a transmitter switchover timetable, implemented by region.
https://en.wikipedia.org/wiki/Digital_television_transition
The Congressional deadline to transition to digital broadcasts was pushed back several times. Congress passed the Telecommunications Act of 1996 with the original transition date of December 31, 2006. The transition to digital television was set back several more times after that. First to December 31, 2008, then to February 17, 2009, and then finally to June 12, 2009. All U.S. full-power analog TV broadcasts were required by law to end on June 12, 2009.
https://en.wikipedia.org/wiki/DTV_transition_in_the_United_States
1 The analog television system switch-off is estimated to be completed on Tuesday, 1 September 2017. 2  Peru: Digital television broadcasts started in Lima in March 2010, and analog broadcasts are scheduled to be terminated on 1 September 2017.
https://en.wikipedia.org/wiki/Digital_television_transition
when was the dtv transition
The Dtv transition was first to December 31, 2008, then to February 17, 2009, and then finally to June 12, 2009. The digital television transition was first to December 31, 2008, then to February 17, 2009, and then finally to June 12, 2009. The Digital Television transition was first to December 31, 2008, then to February 17, 2009, and then finally to June 12, 2009.