This one also affects me. As you can see in the attached picture during installation internet connection stablished and `apt` connetcted to the `http://ir.archive.ubuntu.com/ focal main amd64`.
I select English for setup language but after that choose Tehran/IRAN as location. I think locale not correctly set when select Tehran/IRAN in ubiquity. This is what return from locale command. $ locale LANG=en_US.UTF-8 LANGUAGE= LC_CTYPE="en_US.UTF-8" LC_NUMERIC=az_IR LC_TIME=az_IR LC_COLLATE="en_US.UTF-8" LC_MONETARY=az_IR LC_MESSAGES="en_US.UTF-8" LC_PAPER=az_IR LC_NAME=az_IR LC_ADDRESS=az_IR LC_TELEPHONE=az_IR LC_MEASUREMENT=az_IR LC_IDENTIFICATION=az_IR LC_ALL= As @Danial Behzadi said, It should be `fa_IR UTF-8` as IRAN official language is Farsi/Persian not Azeri. ** Attachment added: "Internet connection while ubuntu 20.04 installation" https://bugs.launchpad.net/ubuntu/+source/gnome-calendar/+bug/1891270/+attachment/5411670/+files/ubuntu.png -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-calendar in Ubuntu. https://bugs.launchpad.net/bugs/1891270 Title: Iranian calendar shows in Azerbaijani language Status in gnome-calendar package in Ubuntu: Invalid Status in ubiquity package in Ubuntu: New Bug description: I already installed Ubuntu 20.04.1 LTS and set location on Iran during installation. After finishing installation successfully, I open the calendar by clicking at the top of the screen (where the clock is shown), I see the calendar with Azerbaijani names for month and weekdays. Such as "آقوست" for August and "جومعه آخشامی" for Thursday. But it should show in Iranian names such as "اوت" for August and "پنجشنبه" for Thursday. Description: Ubuntu 20.04.1 LTS Release: 20.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-calendar/+bug/1891270/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp