diff --git a/source/data/localization/deu.loc.json b/source/data/localization/deu.loc.json
index 5245331..9b32317 100644
--- a/source/data/localization/deu.loc.json
+++ b/source/data/localization/deu.loc.json
@@ -54,6 +54,17 @@
 		"page.login.internal.do": "Anmelden",
 		"page.login.oidc.via": "via {{title}}",
 		"page.logout.title": "Abmelden",
+		"page.caldav.title": "CalDAV",
+		"page.caldav.unavailable": "CalDAV nicht verfügbar",
+		"page.caldav.conf.title": "Zugangsdaten",
+		"page.caldav.conf.address": "Adresse (URL)",
+		"page.caldav.conf.username": "Nutzername",
+		"page.caldav.conf.password": "Kennwort",
+		"page.caldav.conf.setup_hints": "Einrichtungs-Hinweise",
+		"page.caldav.conf.token_unset": "es muss zunächst ein Token gesetzt werden",
+		"page.caldav.set_token.title": "Token setzen",
+		"page.caldav.set_token.action.set": "setzen",
+		"page.caldav.set_token.action.overwrite": "überschreiben",
 		"page.calendar_add.title": "Kalendar anlegen",
 		"page.calendar_add.actions.do": "anlegen",
 		"page.calendar_edit.title.regular": "Kalendar bearbeiten",
diff --git a/source/data/localization/eng.loc.json b/source/data/localization/eng.loc.json
index 87012f1..721a41c 100644
--- a/source/data/localization/eng.loc.json
+++ b/source/data/localization/eng.loc.json
@@ -54,6 +54,17 @@
 		"page.login.internal.do": "login",
 		"page.login.oidc.via": "via {{title}}",
 		"page.logout.title": "Logout",
+		"page.caldav.title": "CalDAV",
+		"page.caldav.unavailable": "CalDAV not available",
+		"page.caldav.conf.title": "credentials",
+		"page.caldav.conf.address": "address (URL)",
+		"page.caldav.conf.username": "username",
+		"page.caldav.conf.password": "password",
+		"page.caldav.conf.setup_hints": "setup hints",
+		"page.caldav.conf.token_unset": "a token has to be set",
+		"page.caldav.set_token.title": "set token",
+		"page.caldav.set_token.action.set": "set",
+		"page.caldav.set_token.action.overwrite": "overwrite",
 		"page.calendar_add.title": "Add calendar",
 		"page.calendar_add.actions.do": "anlegen",
 		"page.event_add.title": "Add event",
diff --git a/source/logic/backend.ts b/source/logic/backend.ts
index 4ba763a..2706011 100644
--- a/source/logic/backend.ts
+++ b/source/logic/backend.ts
@@ -231,7 +231,7 @@ namespace _zeitbild.frontend_web.backend
 	
 	/**
 	 */
-	export async function user_list(
+	export function user_list(
 	) : Promise<
 		Array<
 			{
@@ -249,6 +249,49 @@ namespace _zeitbild.frontend_web.backend
 	}
 	
 	
+	/**
+	 */
+	export function user_dav_conf(
+	) : Promise<
+		(
+			null
+			|
+			{
+				address : string;
+				username : string;
+				password : string;
+				setup_hints : Array<
+					{
+						label : string;
+						link : string;
+						remark : (null | string);
+					}
+				>;
+			}
+		)
+	>
+	{
+		return call(
+			lib_plankton.http.enum_method.get,
+			"/user_dav_conf",
+			null
+		);
+	}
+	
+	
+	/**
+	 */
+	export function user_dav_token(
+	) : Promise<void>
+	{
+		return call(
+			lib_plankton.http.enum_method.patch,
+			"/user_dav_token",
+			null
+		);
+	}
+	
+	
 	/**
 	 */
 	export async function calendar_list(
diff --git a/source/logic/main.ts b/source/logic/main.ts
index e123e0c..4c8a2ff 100644
--- a/source/logic/main.ts
+++ b/source/logic/main.ts
@@ -15,9 +15,9 @@ namespace _zeitbild.frontend_web
 		);
 		
 		// init
-		lib_plankton.log.conf_push(
+		lib_plankton.log.set_main_logger(
 			[
-				lib_plankton.log.channel_make({"kind": "console", "data": {"threshold": "info"}}),
+				{"kind": "console", "data": {"threshold": "info"}},
 			]
 		);
 		await _zeitbild.frontend_web.backend.init(
@@ -54,6 +54,10 @@ namespace _zeitbild.frontend_web
 			{"name": "calendar_add", "parameters": {}},
 			{"label": lib_plankton.translate.get("page.calendar_add.title")}
 		);
+		lib_plankton.zoo_page.add_nav_entry(
+			{"name": "caldav", "parameters": {}},
+			{"label": lib_plankton.translate.get("page.caldav.title")}
+		);
 		/*
 		lib_plankton.zoo_page.add_nav_entry(
 			{"name": "event_add", "parameters": {}},
diff --git a/source/pages/caldav/logic.ts b/source/pages/caldav/logic.ts
new file mode 100644
index 0000000..7646644
--- /dev/null
+++ b/source/pages/caldav/logic.ts
@@ -0,0 +1,119 @@
+namespace _zeitbild.frontend_web.pages
+{
+	
+	/**
+	 */
+	lib_plankton.zoo_page.register(
+		"caldav",
+		async (parameters, target_element) => {
+			target_element.innerHTML = "";
+			const conf = await _zeitbild.frontend_web.backend.user_dav_conf();
+			target_element.innerHTML = await _zeitbild.frontend_web.helpers.template_coin(
+				"caldav",
+				"main",
+				{
+					"label": lib_plankton.translate.get("page.caldav.title"),
+					"content": (
+						(conf === null)
+						?
+						await _zeitbild.frontend_web.helpers.template_coin(
+							"caldav",
+							"unavailable",
+							{
+								"text": lib_plankton.translate.get("page.caldav.unavailable"),
+							}
+						)
+						:
+						await _zeitbild.frontend_web.helpers.template_coin(
+							"caldav",
+							"available",
+							{
+								"conf_title": lib_plankton.translate.get("page.caldav.conf.title"),
+								"conf_content": (
+									(conf.password === null)
+									?
+									await _zeitbild.frontend_web.helpers.template_coin(
+										"caldav",
+										"conf-token_unset",
+										{
+											"text": lib_plankton.translate.get("page.caldav.conf.token_unset")
+										}
+									)
+									:
+									await _zeitbild.frontend_web.helpers.template_coin(
+										"caldav",
+										"conf-token_set",
+										{
+											"address_label": lib_plankton.translate.get("page.caldav.conf.address"),
+											"address_value": conf.address,
+											"username_label": lib_plankton.translate.get("page.caldav.conf.username"),
+											"username_value": conf.username,
+											"password_label": lib_plankton.translate.get("page.caldav.conf.password"),
+											"password_value": conf.password,
+											"setup_hints_label": lib_plankton.translate.get("page.caldav.conf.setup_hints"),
+											"setup_hint_entries": (
+												await lib_plankton.call.promise_condense<string, unknown>(
+													conf.setup_hints
+													.map(
+														entry => () => _zeitbild.frontend_web.helpers.template_coin(
+															"caldav",
+															"conf-setup_hint_entry",
+															{
+																"text": entry.label,
+																"href": entry.link,
+																"remark": (
+																	(entry.remark === null)
+																	?
+																	""
+																	:
+																	lib_plankton.string.coin(
+																		" — {{content}}",
+																		{
+																			"content": entry.remark,
+																		}
+																	)
+																)
+															}
+														)
+													)
+												)
+											).join("")
+										}
+									)
+								),
+								"set_token_title": lib_plankton.translate.get("page.caldav.set_token.title"),
+								"set_token_action": (
+									(conf.password === null)
+									?
+									lib_plankton.translate.get("page.caldav.set_token.action.set")
+									:
+									lib_plankton.translate.get("page.caldav.set_token.action.overwrite")
+								),
+							}
+						)
+					)
+				}
+			);
+			
+			/**
+			 * logic: set token
+			 */
+			{
+				if (conf !== null)
+				{
+					document.querySelector("#caldav-set_token > button").addEventListener(
+						"click",
+						async () => {
+							await _zeitbild.frontend_web.backend.user_dav_token();
+							lib_plankton.zoo_page.reload();
+						}
+					);
+				}
+			}
+			
+			return Promise.resolve<void>(undefined);
+		}
+	);
+
+}
+
diff --git a/source/pages/caldav/templates/available.html.tpl b/source/pages/caldav/templates/available.html.tpl
new file mode 100644
index 0000000..c8bb50b
--- /dev/null
+++ b/source/pages/caldav/templates/available.html.tpl
@@ -0,0 +1,8 @@
+	<div id="caldav-conf">
+		<h3>{{conf_title}}</h3>
+		{{conf_content}}
+	</div>
+	<div id="caldav-set_token">
+		<h3>{{set_token_title}}</h3>
+		<button>{{set_token_action}}</button>
+	</div>
diff --git a/source/pages/caldav/templates/conf-setup_hint_entry.html.tpl b/source/pages/caldav/templates/conf-setup_hint_entry.html.tpl
new file mode 100644
index 0000000..d4338e6
--- /dev/null
+++ b/source/pages/caldav/templates/conf-setup_hint_entry.html.tpl
@@ -0,0 +1,3 @@
+	<li class="caldav-conf-setup_hints-entry">
+		<a target="_blank" href="{{href}}">{{text}}</a>{{remark}}
+	</li>
diff --git a/source/pages/caldav/templates/conf-token_set.html.tpl b/source/pages/caldav/templates/conf-token_set.html.tpl
new file mode 100644
index 0000000..0a8b003
--- /dev/null
+++ b/source/pages/caldav/templates/conf-token_set.html.tpl
@@ -0,0 +1,18 @@
+		<div class="caldav-conf-section" id="caldav-conf-address">
+			<span class="caldav-conf-section-label">{{address_label}}</span>
+			<span class="caldav-conf-section-value caldav-conf-section-value-regular">{{address_value}}</span>
+		</div>
+		<div class="caldav-conf-section" id="caldav-conf-username">
+			<span class="caldav-conf-section-label">{{username_label}}</span>
+			<span class="caldav-conf-section-value caldav-conf-section-value-regular">{{username_value}}</span>
+		</div>
+		<div class="caldav-conf-section" id="caldav-conf-password">
+			<span class="caldav-conf-section-label">{{password_label}}</span>
+			<span class="caldav-conf-section-value caldav-conf-section-value-regular">{{password_value}}</span>
+		</div>
+		<div class="caldav-conf-section" id="caldav-conf-setup_hints">
+			<span class="caldav-conf-section-label">{{setup_hints_label}}</span>
+			<ul>
+{{setup_hint_entries}}
+			</ul>
+		</div>
diff --git a/source/pages/caldav/templates/conf-token_unset.html.tpl b/source/pages/caldav/templates/conf-token_unset.html.tpl
new file mode 100644
index 0000000..1d78bf3
--- /dev/null
+++ b/source/pages/caldav/templates/conf-token_unset.html.tpl
@@ -0,0 +1,4 @@
+	<div id="caldav-conf-info">
+		({{text}})
+	</div>
+	
diff --git a/source/pages/caldav/templates/main.html.tpl b/source/pages/caldav/templates/main.html.tpl
new file mode 100644
index 0000000..da98a2b
--- /dev/null
+++ b/source/pages/caldav/templates/main.html.tpl
@@ -0,0 +1,6 @@
+<div id="caldav">
+	<h2>{{label}}</h2>
+	<div id="caldav-content">
+{{content}}
+	</div>
+</div>
diff --git a/source/pages/caldav/templates/unavailable.html.tpl b/source/pages/caldav/templates/unavailable.html.tpl
new file mode 100644
index 0000000..d6d75fb
--- /dev/null
+++ b/source/pages/caldav/templates/unavailable.html.tpl
@@ -0,0 +1,3 @@
+	<div id="caldav-info">
+		{{text}}
+	</div>
diff --git a/source/style/main.css b/source/style/main.css
index a91b626..1cf4e9b 100644
--- a/source/style/main.css
+++ b/source/style/main.css
@@ -1,3 +1,8 @@
+:root
+{
+	--hue: 150;
+}
+
 html
 {
 	background-color: hsl(0, 0%, 12.5%);
@@ -29,18 +34,29 @@ nav > ul > li
 	padding: 8px;
 }
 
-a
+nav a
 {
 	padding: 8px;
 	text-decoration: none;
-	color: hsl(0, 0%, 87.5%);
+	color: hsl(var(--hue), 0%, 87.5%);
+}
+
+nav a:hover
+{
+	color: hsl(var(--hue), 0%, 100%);
+	border-bottom: 2px solid hsl(0, 0%, 100%);
+	transition: 1s ease color;
+}
+
+a
+{
+	text-decoration: none;
+	color: hsl(var(--hue), 50%, 50%);
 }
 
 a:hover
 {
-	color: hsl(0, 0%, 100%);
-	border-bottom: 2px solid hsl(0, 0%, 100%);
-	transition: 1s ease color;
+	color: hsl(var(--hue), 50%, 75%);
 }
 
 input,select,textarea
diff --git a/source/style/page-caldav.css b/source/style/page-caldav.css
new file mode 100644
index 0000000..47e293b
--- /dev/null
+++ b/source/style/page-caldav.css
@@ -0,0 +1,22 @@
+.caldav-conf-section
+{
+	margin-bottom: 16px;
+}
+
+.caldav-conf-section-label
+{
+	margin-left: 16px;
+	display: block;
+	font-weight: bold;
+	text-transform: capitalize;
+}
+
+.caldav-conf-section-value
+{
+	margin-left: 32px;
+}
+
+.caldav-conf-section-value-regular
+{
+	font-family: monospace;
+}
diff --git a/tools/makefile b/tools/makefile
index d0b9b93..78c8687 100644
--- a/tools/makefile
+++ b/tools/makefile
@@ -35,6 +35,7 @@ templates: \
 		templates-widgets-sources \
 		templates-widgets-listview \
 		templates-widgets-weekview \
+		templates-pages-caldav \
 		templates-pages-calendar_add \
 		templates-pages-calendar_edit \
 		templates-pages-event_add \
@@ -63,6 +64,13 @@ templates-widgets-weekview: \
 	@ ${cmd_mkdir} ${dir_build}/templates/widget-weekview
 	@ ${cmd_cp} -r -u -v ${dir_source}/widgets/weekview/templates/* ${dir_build}/templates/widget-weekview/
 
+.PHONY: templates-pages-caldav
+templates-pages-caldav: \
+		$(wildcard ${dir_source}/pages/caldav/templates/*)
+	@ ${cmd_log} "templates:caldav …"
+	@ ${cmd_mkdir} ${dir_build}/templates/caldav
+	@ ${cmd_cp} -r -u -v ${dir_source}/pages/caldav/templates/* ${dir_build}/templates/caldav/
+
 .PHONY: templates-pages-calendar_add
 templates-pages-calendar_add: \
 		$(wildcard ${dir_source}/pages/calendar_add/templates/*)
@@ -127,6 +135,7 @@ ${dir_temp}/logic-unlinked.js: \
 		${dir_source}/widgets/weekview/logic.ts \
 		${dir_source}/pages/login/logic.ts \
 		${dir_source}/pages/logout/logic.ts \
+		${dir_source}/pages/caldav/logic.ts \
 		${dir_source}/pages/oidc_finish/logic.ts \
 		${dir_source}/pages/calendar_add/logic.ts \
 		${dir_source}/pages/calendar_edit/logic.ts \