Currently the date format on my posts is ‘Month / Day / Year’. No matter what I change the day format to it still remains the same in spectrum. Any way to fix this without the css upgrade? In other themes you could change the date format without it so I just assume this is something that was accidentally left out.
There are two places that a theme can get dates from, and with one place, the HTML date codes in settings > general control, and in the other, you would have to have access to the underlying theme files, which we do not have.
I would contact staff directly and ask them to change this. All themes should pull the date from the stuff at settings > general so that people can format the date they way they want it.