diff --git a/sys-libs/glibc/add-en_SE.patch b/sys-libs/glibc/add-en_SE.patch
deleted file mode 100644
index 1e844f9..0000000
--- a/sys-libs/glibc/add-en_SE.patch
+++ /dev/null
@@ -1,155 +0,0 @@
-diff -Nur a/localedata/locales/en_SE b/localedata/locales/en_SE
---- a/localedata/locales/en_SE	1969-12-31 19:00:00.000000000 -0500
-+++ b/localedata/locales/en_SE	2025-11-11 11:28:42.367611208 -0500
-@@ -0,0 +1,140 @@
-+escape_char /
-+comment_char %
-+
-+% English language locale for Sweden
-+% Source: Datorföreningen Stacken, Kungliga Tekniska högskolan
-+% Address: Datorföreningen Stacken, c/o NADA, KTH, 100 44 Stockholm, Sweden
-+% Contact: Mikael Auno
-+% Email: auno+en_SE@stacken.kth.se
-+
-+% Language: en
-+% Territory: SE
-+% Revision: 0.2
-+% Date: 2009-02-02
-+
-+% *TODO/Questions*
-+%
-+% As this is a locale for a language that is not used in general in domestic
-+% communication in the given territory (but which is used widely by computer
-+% enthusiasts in computer related situations), a couple of questions arise which
-+% might otherwise seem obvious.
-+%
-+% LC_COLLATE: Is collation a property of the language or the territory? Names of
-+% local people and local places will definitely be communicated between users
-+% within a territory, but how should these names be sorted with respect to
-+% characters specific to that territory.
-+%
-+% LC_NUMERIC: Is the format of numeric expressions a property of the language or
-+% the territory?
-+%
-+% LC_NAME: Is the format of the name representation a property of the language
-+% or the territory? In Swedish in Sweden one would write a name as "Thomas
-+% Andersson" whereas in English in the US one would write "Mr. Thomas Andersson",
-+% which would be correct for English in Sweden?
-+
-+LC_IDENTIFICATION
-+title      "English locale for Sweden"
-+source     "Datorf<U00F6>reningen Stacken, Kungliga Tekniska h<U00F6>gskolan"
-+address    "Datorf<U00F6>reningen Stacken, c/o NADA, KTH, 100 44 Stockholm, Sweden"
-+contact    "Mikael Auno"
-+email      "auno+en_SE@stacken.kth.se"
-+tel        ""
-+fax        ""
-+language   "en"
-+territory  "SE"
-+revision   "0.2"
-+date       "2009-02-02"
-+%
-+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
-+END LC_IDENTIFICATION
-+
-+LC_CTYPE
-+copy "sv_SE"
-+END LC_CTYPE
-+
-+LC_COLLATE
-+copy "sv_SE"
-+END LC_COLLATE
-+
-+LC_MONETARY
-+copy "sv_SE"
-+END LC_MONETARY
-+
-+LC_NUMERIC
-+copy "sv_SE"
-+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"
-+
-+% sv_SE
-+% Appropriate date and time representation (%a %e %b %Y %H:%M:%S)
-+d_t_fmt  "%A W%V - %Y·%m·%d %T %Z"
-+date_fmt "%A W%V - %Y·%m·%d %T %Z"
-+d_fmt    "%Y·%m·%d"
-+t_fmt    "%T"
-+am_pm    "";""
-+t_fmt_ampm  ""
-+week    7;19971130;4
-+first_weekday 2
-+first_workday 2
-+END LC_TIME
-+
-+LC_MESSAGES
-+copy "en_US"
-+END LC_MESSAGES
-+
-+LC_PAPER
-+copy "sv_SE"
-+END LC_PAPER
-+
-+LC_TELEPHONE
-+copy "sv_SE"
-+END LC_TELEPHONE
-+
-+LC_MEASUREMENT
-+copy "sv_SE"
-+END LC_MEASUREMENT
-+
-+LC_NAME
-+copy "sv_SE"
-+END LC_NAME
-+
-+LC_ADDRESS
-+copy "sv_SE"
-+END LC_ADDRESS
-diff -Nur a/localedata/SUPPORTED b/localedata/SUPPORTED
---- a/localedata/SUPPORTED	2025-01-28 12:31:33.000000000 -0500
-+++ b/localedata/SUPPORTED	2025-11-09 10:49:56.132959347 -0500
-@@ -153,6 +153,7 @@
- en_PH.UTF-8/UTF-8 \
- en_PH/ISO-8859-1 \
- en_SC.UTF-8/UTF-8 \
-+en_SE.UTF-8/UTF-8 \
- en_SG.UTF-8/UTF-8 \
- en_SG/ISO-8859-1 \
- en_US.UTF-8/UTF-8 \
diff --git a/sys-libs/glibc/tweak-en_SE.patch b/sys-libs/glibc/tweak-en_SE.patch
new file mode 100644
index 0000000..fa1ab96
--- /dev/null
+++ b/sys-libs/glibc/tweak-en_SE.patch
@@ -0,0 +1,16 @@
+diff -Nur a/localedata/locales/en_SE b/localedata/locales/en_SE
+--- a/localedata/locales/en_SE	2026-01-23 15:54:00.000000000 -0500
++++ b/localedata/locales/en_SE	2026-06-15 22:42:23.982719840 -0400
+@@ -90,9 +90,9 @@
+          "November";/
+          "December"
+ % date formats following ISO 8601-1988
+-d_t_fmt  "%Y-%m-%dT%T%:z"
+-date_fmt "%Y-%m-%dT%T%:z"
+-d_fmt    "%Y-%m-%d"
++d_t_fmt  "%A W%V - %Y·%m·%d %T %Z"
++date_fmt "%A W%V - %Y·%m·%d %T %Z"
++d_fmt    "%Y·%m·%d"
+ t_fmt    "%T"
+ am_pm    "";""
+ t_fmt_ampm  ""