Dear Maintainer,

It's common in Switzerland to use debian in english, but maintaining the metric system unit, currency and the european way of writing the date.
In the attachement file there is a possible locale template to include in the official package.

*** Desktop/en_CH
comment_char %
escape_char /

% This file is part of the GNU C Library and contains locale data.
% The Free Software Foundation does not claim any copyright interest
% in the locale data contained in this file.  The foregoing does not
% affect the license of the GNU C Library as a whole.  It does not
% exempt you from the conditions of the license if your use would
% otherwise be governed by that license.

% English language locale for Switzerland
% Source: RAP
% Address: Sankt Jo//rgens Alle 8
%    DK-1615 Ko//benhavn V, Danmark
% Contact: Keld Simonsen
% Email: Keld.Simonsen@dkuug.dk
% Tel: +45 - 31226543
% Fax: +45 - 33256543
% Language: en
% Territory: CH
% Revision: 4.3
% Date: 1996-10-15
% Users: general

LC_IDENTIFICATION
title      "English locale for Switzerland"
source     "RAP"
address    ""
contact    ""
email      "bug-glibc-locales@gnu.org"
tel        ""
fax        ""
language   "Swiss English"
territory  "Switzerland"
revision   "1.0"
date       "2022-04-30"

category "i18n:2012";LC_IDENTIFICATION
category "i18n:2012";LC_CTYPE
category "i18n:2012";LC_COLLATE
category "i18n:2012";LC_TIME
category "i18n:2012";LC_NUMERIC
category "i18n:2012";LC_MONETARY
category "i18n:2012";LC_MESSAGES
category "i18n:2012";LC_PAPER
category "i18n:2012";LC_NAME
category "i18n:2012";LC_ADDRESS
category "i18n:2012";LC_TELEPHONE
category "i18n:2012";LC_MEASUREMENT
END LC_IDENTIFICATION

LC_CTYPE
copy "i18n"

translit_start
include "translit_combining";""
translit_end
END LC_CTYPE

LC_COLLATE
% Copy the template from ISO/IEC 14651
copy "iso14651_t1"
END LC_COLLATE

LC_MONETARY
copy  "de_CH"
END LC_MONETARY

LC_NUMERIC
copy "de_CH"
END LC_NUMERIC

LC_TIME
abday       "Sun";"Mon";"Tue";"Wed";"Thu";"Fri";"Sat"
day         "Sunday";/
            "Monday";/
            "Tuesday";/
            "Wednesday";/
            "Thursday";/
            "Friday";/
            "Saturday"
abmon       "Jan";"Feb";/
            "Mar";"Apr";/
            "May";"Jun";/
            "Jul";"Aug";/
            "Sep";"Oct";/
            "Nov";"Dec"
mon         "January";/
            "February";/
            "March";/
            "April";/
            "May";/
            "June";/
            "July";/
            "August";/
            "September";/
            "October";/
            "November";/
            "December"
d_t_fmt     "%a %d %b %Y %T"
date_fmt    "%a %d %b %Y %T %Z"
d_fmt       "%d. %m. %y"
t_fmt       "%T"
am_pm       "";""
t_fmt_ampm  ""
week    7;19971130;4
first_weekday 2
END LC_TIME

LC_MESSAGES
copy "en_US"
END LC_MESSAGES

LC_PAPER
copy "i18n"
END LC_PAPER

LC_TELEPHONE
tel_int_fmt    "+%c %a %l"
int_select     "00"
int_prefix     "41"
END LC_TELEPHONE

LC_MEASUREMENT
copy "i18n"
END LC_MEASUREMENT

LC_NAME
copy "en_US"
END LC_NAME

LC_ADDRESS
postal_fmt    "%f%N%a%N%d%N%b%N%s %h %e %r%N%z %T%N%c%N"
country_name "Switzerland"
country_ab2   "CH"
country_ab3   "CHE"
country_num   756
country_car    "CH"
country_post "CH"
country_isbn "979-10"
lang_name     "English"
lang_ab      "en"
lang_term    "eng"
lang_lib    "eng"
END LC_ADDRESS