Power Rangers milestones by 50th episode

50 – "Return of An Old Friend, Part II" (March 1, 1994) 

100 – "Rangers Back in Time, Part II" (February 11, 1995)

150 – "Attack of the 60' Bulk" (February 10, 1996)

200 – "Another Song and Dance" (November 15, 1996)

250 – "Chase Into Space, Part II" (November 24, 1997)

300 – "Double Duty" (March 20, 1999)

350 – "Truth Discovered" (April 29, 2000)

400 – "The Last Race" (July 7, 2001)

450 – "Monitoring Earth" (September 28, 2002)

500 – "Legacy of Power" (February 28, 2004)

550 – "Boom" (May 21, 2005)

600 – "Light Source, Part I" (October 9, 2006)

650 – "Ghost of a Chance II" (May 19, 2008)

700 – "Danger into Destiny, Part II" (December 26, 2009)

750 – "Stranger Ranger" (February 23, 2013)

800 – "Knight After Knights" (September 19, 2015)

850 – "The Adventures of Redbot" (October 21, 2017)

900 – "Save Our Shores" (February 29, 2020)