Originally Posted by hch
I have put together a list of when the episode of "Laverne & Shirley" were filmed. If anyone had any corrections or anything to add, feel free to contribute. Some of the dates were pretty hard to find, but with the help of scripts and even file photos, I have compiled a good list.
Season 2 [1976-1977]
27. (unknown) Anniversary Show (Original Air Date 1/10/1977)
I took a quick look at this episode from the DVD, and did notice that when this originally aired, it contained a brief blurb of a scene at that time previously unaired (that being Lenny and Squiggy in fire department gear, which aired about a month after this episode (Steppin' Out), but filmed on 9/22/1976).
Also, if the sources were reliable in the book "Happier Days" by Marley Brant, it is noted between pages 81 to 84 that less than 2 months into the Fall Season 1976, which represents Season 2, Cindy Williams walked out, which represents at some point in November 1976, and production was halted for 3 weeks as a result, which explains for the gap between November 10 and December 10.
Furthermore, that episode contains scenes from "Excuse Me, May I Cut In?," which was filmed on 9/29/1976 and also "Look Before You Leap," filmed on 10/6/1976.
Prior to the walkout, it is noted that the episodes were produced on Wednesdays, and the missing Wednesdays in question after 10/6/1976 were 10/13/1976, 11/17/1976, 11/24/1976, 12/1/1976 and 12/8/1976. But we can remove 12/8/1976 from consideration as they switched from Wednesdays to Fridays after production resumed and there was an episode filmed on 12/10/1976.
Accounting for the 3 weeks that production was halted due to Cindy Williams' walkout and more likely than not, this eliminates 12/1/1976 and 11/24/1976, but that was the day before Thanksgiving, and they probably would not film an episode the day prior to that holiday.
The first episode filmed after the holiday break was "Call Me A Taxi," but that was 1/13/1977, automatically eliminating this and any episode filmed from then on, since this episode in question was aired 1/10/1977.
1/6/1977 may be a possible, but given that it is just a few days after New Year's, is very unlikely, noting the filming schedule for the other seasons, hence eliminating this option.
Which leaves 10/13/1976 and 11/17/1976 to be the very likely dates for this episode to have been filmed, I'd probably figure the date to be 10/13/1976, pending whether or not I find any scenes from the four episodes filmed between 10/20/1976 and 11/10/1976 inclusive (namely, "Dear Future Model," "Oh Hear The Angels Voices," "Guilty Until Proven Not Innocent" and "Playing Hooky").