how to also show day of week and time beneath post title?

Below the title of each of my posts (and before the content itself), currently the month, date and year appear.

I would like it changed so two things are different: I want to show also the day of the week, and also the time the post was made.

I realize all this info shows at the end of each post (if a reader has actually clicked on the post headline) but I want it in both places.

I use wp 2.92, default theme kubrick. i am https://www.lewiscountysirens.com

In my dashboard settings, general, under ‘date format’ just now i clicked the ‘custom’ box and put l, Fj, Y yet didn’t get any part of the change i hoped for. (i understand ‘l’ is for day of the week)

(Also, I am curious, in that same settings, general, the final choice is ‘week starts on” … and i’ve always left it on the default ‘monday’ don’t know what that means and been afraid to change it. but wonder if it has any effect on my desired outcome)

anyhow, can someone tell me how to get the day of the week and the time of the post to show beneath the title/headline of each post? thank you in advance for any help.