I am looking for someone who can tell me how to display post number in my post, thank you

    @Shaun I know about this, but for me and my users would be nice to add this counter to the right side on the same line as date and time... I also need to show full date for old posts.

      Eldenroot that's not part of core and to my knowledge there's no extension that does that yet.

      If you're into coding you could try creating those extensions yourself or you can contact an extension developer to work on it ?

        Just a quick and dirty hack, try it out and see whether it suits you:

        .PostMeta .Dropdown-menu {
    display: block;
    left: -1000px;
    z-index: 10;
}
.PostMeta.open .Dropdown-menu {
    left: 0;
}
.PostMeta-number {
    position: relative;
    left: 1140px;
    top: -2.7em;
}
.PostMeta.open .PostMeta-number {
    left: 0;
    top: 0;
}

        Put this into your custom CSS in the admin panel (section Appearance).

        It won't be visible in the mobile view.