FreeBSD and UTF-8

I want to have all the locales set to en_US.UTF-8, but I don’t want 12h time (AM/PM).

Modify /etc/login.conf as follows:

--- /etc/login.conf.orig	2016-05-17 20:19:47.189836683 +0200
+++ /etc/login.conf	2016-05-17 20:04:48.151898313 +0200
@@ -26,7 +26,7 @@
 	:passwd_format=sha512:\
 	:copyright=/etc/COPYRIGHT:\
 	:welcome=/etc/motd:\
-	:setenv=MAIL=/var/mail/$,BLOCKSIZE=K:\
+	:setenv=MAIL=/var/mail/$,BLOCKSIZE=K,LC_COLLATE=C:\
 	:path=/sbin /bin /usr/sbin /usr/bin /usr/games /usr/local/sbin /usr/local/bin ~/bin:\
 	:nologin=/var/run/nologin:\
 	:cputime=unlimited:\
@@ -44,7 +44,9 @@
 	:pseudoterminals=unlimited:\
 	:priority=0:\
 	:ignoretime@:\
-	:umask=022:
+	:umask=022:\
+    :charset=UTF-8:\
+    :lang=en_US.UTF-8:
 
 #
 # A collection of common class names - forward them all to 'default'

After changing execute sudo cap_mkdb /etc/login.conf.

To change to 24h clock in uptime, w etc. Change /usr/share/locale/en_US.UTF-8/LC_TIME as follows:

--- LC_TIME.orig	2016-05-17 20:14:40.018856258 +0200
+++ LC_TIME	2016-05-17 20:15:36.835860995 +0200
@@ -39,8 +39,8 @@
 %H:%M:%S
 %m/%d/%Y
 %a %b %e %X %Y
-AM
-PM
+
+
 %a %b %e %X %Z %Y
 January
 February
@@ -55,4 +55,4 @@
 November
 December
 md
-%I:%M:%S %p
+

Note: Don’t remove the lines, only all characters on the lines.

References: