This thread is in response to the quoted tweet, as promised. Q was ‘Why is Hanumanji worshipped on Saturday?’
Saturday is the day that belongs to Shani Dev (Saturn) and worshipping Hanumanji on Saturday is believed to lessen the ill-effect of Shani Dev on one’s life.

The incident dates back to the time of Ramayana, Ravana won three worlds +
@HelloNNewman
The opportunity presented itself in form of Meghnad/Indrajeet’s birth. Ravana was invincible and for all purpose +
@InfoVedic @sambhashan_in @devkshetra @hathyogi31 @Sanskritii_1 @Itishree001
@SriRamya21 @RajiIndustani @Prisma_Me @Krishna_Priiya
@rspchary @Kishoreciyer1 @Anshulspiritual

Hope, this answers the Q.
ऊँ शं शनैश्चराय नमः
Have a great remaining of the day and weekend!
Jai Shri Ram! Jai Shri Hanuman!
Src: My memory 😁
Pic: Google
@BesuraTaansane