diff --git a/data/cosin.toml b/data/cosin.toml
index d5ec320..a60592c 100644
--- a/data/cosin.toml
+++ b/data/cosin.toml
@@ -1,12 +1,14 @@
 title = "Chaos Singularity"
 
+cos_value = 0.45580812693525397
+
 
 # Set to false if date for next year is not known yet:
 date_known = true
 
 date_day_start = 15
 date_day_end = 17
-date_month = 6
+date_month = "Juni"
 date_year = 2018
 
 date_day_name_start = "Freitag"
@@ -16,10 +18,7 @@ date_day_name_end = "Sonntag"
 place_known = true
 
 location = "Villa Ritter"
-city_de = "Biel"
-city_fr = "Bienne"
-city_it = "Bienna"
-city_en = "Biel"
+city = "Biel"
 
 
 registration_open = true
@@ -44,3 +43,6 @@ schedule_urls = [
 
 irc_server = "irc://irc.chaostreff.ch/"
 irc_channel = "#cosin"
+
+
+orga_email = "cosin2018@cosin.ch"
diff --git a/data/mese.toml b/data/mese.toml
deleted file mode 100644
index 04a70db..0000000
--- a/data/mese.toml
+++ /dev/null
@@ -1,12 +0,0 @@
-1  = "gennaio"
-2  = "febbraio"
-3  = "marzo"
-4  = "aprile"
-5  = "maggio"
-6  = "giugno"
-7  = "luglio"
-8  = "agosto"
-9  = "settembre"
-10 = "ottobre"
-11 = "novembre"
-12 = "dicembre"
diff --git a/data/mois.toml b/data/mois.toml
deleted file mode 100644
index 96288ae..0000000
--- a/data/mois.toml
+++ /dev/null
@@ -1,12 +0,0 @@
-1  = "janvier"
-2  = "février"
-3  = "mars"
-4  = "avril"
-5  = "mai"
-6  = "juin"
-7  = "juillet"
-8  = "août"
-9  = "septembre"
-10 = "octobre"
-11 = "novembre"
-12 = "décembre"
diff --git a/data/monate.toml b/data/monate.toml
deleted file mode 100644
index a17a3fa..0000000
--- a/data/monate.toml
+++ /dev/null
@@ -1,12 +0,0 @@
-1  = "Januar"
-2  = "Februar"
-3  = "März"
-4  = "April"
-5  = "Mai"
-6  = "Juni"
-7  = "Juli"
-8  = "August"
-9  = "September"
-10 = "Oktober"
-11 = "November"
-12 = "Dezember"
diff --git a/data/months.toml b/data/months.toml
deleted file mode 100644
index ac1c705..0000000
--- a/data/months.toml
+++ /dev/null
@@ -1,12 +0,0 @@
-1  = "January"
-2  = "February"
-3  = "March"
-4  = "April"
-5  = "May"
-6  = "June"
-7  = "July"
-8  = "August"
-9  = "September"
-10 = "October"
-11 = "November"
-12 = "December"
diff --git a/i18n/de.toml b/i18n/de.toml
new file mode 100644
index 0000000..f435888
--- /dev/null
+++ b/i18n/de.toml
@@ -0,0 +1,13 @@
+[Juni]
+other = "Juni"
+
+
+[Freitag]
+other = "Freitag"
+
+[Sonntag]
+other = "Sonntag"
+
+
+[Biel]
+other = "Biel"
diff --git a/i18n/en.toml b/i18n/en.toml
new file mode 100644
index 0000000..6c5efd8
--- /dev/null
+++ b/i18n/en.toml
@@ -0,0 +1,13 @@
+[Juni]
+other = "june"
+
+
+[Freitag]
+other = "Friday"
+
+[Sonntag]
+other = "Sunday"
+
+
+[Biel]
+other = "Biel"
diff --git a/i18n/fr.toml b/i18n/fr.toml
new file mode 100644
index 0000000..4508664
--- /dev/null
+++ b/i18n/fr.toml
@@ -0,0 +1,13 @@
+[Juni]
+other = "june"
+
+
+[Freitag]
+other = "vendredi"
+
+[Sonntag]
+other = "dimanche"
+
+
+[Biel]
+other = "Bienne"
diff --git a/i18n/it.toml b/i18n/it.toml
new file mode 100644
index 0000000..4723dd4
--- /dev/null
+++ b/i18n/it.toml
@@ -0,0 +1,13 @@
+[Juni]
+other = "june"
+
+
+[Freitag]
+other = "venerdì"
+
+[Sonntag]
+other = "domenica"
+
+
+[Biel]
+other = "Bienna"
diff --git a/themes/cosin-theme/layouts/partials/site-sidebar.de.html b/themes/cosin-theme/layouts/partials/site-sidebar.de.html
index bf247e1..1fd0770 100644
--- a/themes/cosin-theme/layouts/partials/site-sidebar.de.html
+++ b/themes/cosin-theme/layouts/partials/site-sidebar.de.html
@@ -10,11 +10,11 @@
 
 <p>
   {{ if .date_known }}
-  <strong>Datum:</strong> {{ .date_day_start }}.-{{ .date_day_end }}. {{ index $.Site.Data.monate (string .date_month) }} {{ .date_year }}<br/>
+  <strong>Datum:</strong> {{ .date_day_start }}.-{{ .date_day_end }}. {{ i18n .date_month }} {{ .date_year }}<br/>
   {{ end }}
 
   {{ if .place_known }}
-  <strong>Ort:</strong> {{ .location }} in <strong>{{ .city_de }}</strong><br/>
+  <strong>Ort:</strong> {{ .location }} in <strong>{{ i18n .city }}</strong><br/>
   {{ end }}
 
   {{ if .registration_open }}
diff --git a/themes/cosin-theme/layouts/partials/site-sidebar.en.html b/themes/cosin-theme/layouts/partials/site-sidebar.en.html
index ea65b44..631b3e9 100644
--- a/themes/cosin-theme/layouts/partials/site-sidebar.en.html
+++ b/themes/cosin-theme/layouts/partials/site-sidebar.en.html
@@ -10,11 +10,11 @@
 
 <p>
   {{ if .date_known }}
-  <strong>Date:</strong> {{ index $.Site.Data.months (string .date_month) }} {{ .date_day_start }}th - {{ .date_day_end }}th {{ .date_year }}<br/>
+  <strong>Date:</strong> {{ i18n .date_month }} {{ .date_day_start }}th - {{ .date_day_end }}th {{ .date_year }}<br/>
   {{ end }}
 
   {{ if .place_known }}
-  <strong>Location:</strong> {{ .location }} in <strong>{{ .city_en }}</strong><br/>
+  <strong>Location:</strong> {{ .location }} in <strong>{{ i18n .city }}</strong><br/>
   {{ end }}
 
   {{ if .registration_open }}
diff --git a/themes/cosin-theme/layouts/partials/site-sidebar.fr.html b/themes/cosin-theme/layouts/partials/site-sidebar.fr.html
index 535d91b..4d4bd4c 100644
--- a/themes/cosin-theme/layouts/partials/site-sidebar.fr.html
+++ b/themes/cosin-theme/layouts/partials/site-sidebar.fr.html
@@ -10,11 +10,11 @@
 
 <p>
   {{ if .date_known }}
-  <strong>Date:</strong> {{ .date_day_start }}.-{{ .date_day_end }}. {{ index $.Site.Data.mois (string .date_month) }} {{ .date_year }}<br/>
+  <strong>Date:</strong> {{ .date_day_start }}.-{{ .date_day_end }}. {{ i18n .date_month }} {{ .date_year }}<br/>
   {{ end }}
 
   {{ if .place_known }}
-  <strong>Lieu:</strong> {{ .location }} à <strong>{{ .city_fr }}</strong><br/>
+  <strong>Lieu:</strong> {{ .location }} à <strong>{{ i18n .city }}</strong><br/>
   {{ end }}
 
   {{ if .registration_open }}
diff --git a/themes/cosin-theme/layouts/partials/site-sidebar.it.html b/themes/cosin-theme/layouts/partials/site-sidebar.it.html
index 65b52d3..63ce9b2 100644
--- a/themes/cosin-theme/layouts/partials/site-sidebar.it.html
+++ b/themes/cosin-theme/layouts/partials/site-sidebar.it.html
@@ -10,11 +10,11 @@
 
 <p>
   {{ if .date_known }}
-  <strong>Data:</strong> {{ .date_day_start }}.-{{ .date_day_end }}. {{ index $.Site.Data.mese (string .date_month) }} {{ .date_year }}<br/>
+  <strong>Data:</strong> {{ .date_day_start }}.-{{ .date_day_end }}. {{ i18n .date_month }} {{ .date_year }}<br/>
   {{ end }}
 
   {{ if .place_known }}
-  <strong>Luogo:</strong> {{ .location }} a <strong>{{ .city_it }}</strong><br/>
+  <strong>Luogo:</strong> {{ .location }} a <strong>{{ i18n .city }}</strong><br/>
   {{ end }}
 
   {{ if .registration_open }}