R-Type Delta happened in 1998.
Airforce Delta happened in 1999.
Delta Warp happened in 2000.
Delta Bowl happened in 1947.
Battle of the Delta happened in -1178.
Battle of Rufiji Delta happened in 1915.
Delta - video game - happened in 1987.
Super Stardust Delta happened in 2012.
Delta Force - video game - happened in 1998.
AirForce Delta Storm was released on December 19, 2001.
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Airforce Delta Strike, also known as Deadly Skies III, was released on February 19, 2004 for the PlayStation 2.
In manual star delta starter, the change over from star to delta does not happen automatically. The operator or user puts on the starter, and after few seconds he pushes a lever or handle to change over to Delta. In automatic method, change over happens from star to delta using an automatic preset timer.