Currently, it looks like this (MM/DD/YY): 

 

But I want to change that to DD/MM/YY. I tried translating the language but it didn't work. I don't know if I translated the correct parts. I changed _date_last_year_short and _date_this_year_short to look like this {0#} {!1#[1:Jan][2:Feb][3:Mar][4:Apr][5:May][6:Jun][7:Jul][8:Aug][9:Sep][10:Oct][11:Nov][12:Dec]}, but it's not working.

Bump  

Hmm ... that works on my site.

Or maybe it isn't working and I just think it does because I also have this plugin that Mark made:

Then I have the plugin format set to %d/%m/%Y.

Your locale should be deciding this for you, though. That looks like you're using English, so I presume it's the default. Have you tried using en_GB instead of en_US?

15 minutes ago, Meddysong said:

Hmm ... that works on my site.

Or maybe it isn't working and I just think it does because I also have this plugin that Mark made:

Then I have the plugin format set to %d/%m/%Y.

Your locale should be deciding this for you, though. That looks like you're using English, so I presume it's the default. Have you tried using en_GB instead of en_US?

I changed my locale to English (United Kingdom) and it worked! Thank you very much!

This locale thing probably needs to be set during any upgrade. My had defaulted to USA when I'm in Australia and I had no idea it was screwing with the data formats on my forum topics.