What do the abbreviations Tour. and Dif. mean in French when talking about a...

[Brent]

...TV program broadcast date? What do the abbreviations Tour. and Dif. mean in French when talking about a TV program broadcast date? What are they short for, and what do they translate to in English? For example: <name of TV program> N°34 (Tour. 03/10/92 - Dif. 15/02/92)

 

[voicefromparis]

tournage (the date it was filmed)
Diffusion (the date it was aired)