diff --git a/git-crypt/secrets.nix b/git-crypt/secrets.nix
index 1dfe292..d500f2e 100755
Binary files a/git-crypt/secrets.nix and b/git-crypt/secrets.nix differ
diff --git a/home-modules/calendar.nix b/home-modules/calendar.nix
new file mode 100644
index 0000000..aa168c1
--- /dev/null
+++ b/home-modules/calendar.nix
@@ -0,0 +1,81 @@
+{ config, lib, user, secrets, domain, ... }: let 
+  calendars = [
+    {
+      name = "Preservation";
+      primary = true;
+      url = "https://dav.${domain}/nx2/preservation/";
+      color = "#dddddd";
+    }
+    {
+      name = "Effort";
+      primary = false;
+      url = "https://dav.${domain}/nx2/effort/";
+      color = "#dd2222";
+    }
+    {
+      name = "Experience";
+      primary = false;
+      url = "https://dav.${domain}/nx2/experience/";
+      color = "#2222dd";
+    }
+    {
+      name = "Exposure";
+      primary = false;
+      url = "https://dav.${domain}/nx2/exposure/";
+      color = "#22aa22";
+    }
+    {
+      name = "Engagement";
+      primary = false;
+      url = "https://dav.${domain}/nx2/engagement/";
+      color = "#8800CC";
+    }
+  ];
+in {
+  accounts.calendar.accounts = let
+    makeCalendar = url: primary: color: {
+      inherit primary;
+      remote = {
+        type = "caldav";
+        userName = user;
+        inherit url;
+      };
+    };
+    m = cc: lib.attrsets.mergeAttrsList ( map (c: { "${c.name}" = makeCalendar c.url c.primary c.color;}) cc );
+  in m calendars;
+
+
+  # TODO: Replace this once https://github.com/nix-community/home-manager/pull/5484 is merged.
+  # Make sure it works, though, including the order of calendars.
+  programs.thunderbird.settings = let
+
+    makeThunderbirdCalendar = cal: let
+      calendarAccountSafeName = (builtins.replaceStrings ["."] ["-"]) cal.name;
+    in {
+      "calendar.registry.${calendarAccountSafeName}.cache.enabled" = true;
+      "calendar.registry.${calendarAccountSafeName}.calendar-main-default" = cal.primary;
+      "calendar.registry.${calendarAccountSafeName}.calendar-main-in-composite" = true;
+      "calendar.registry.${calendarAccountSafeName}.color" = cal.color;
+      "calendar.registry.${calendarAccountSafeName}.name" = cal.name;
+      "calendar.registry.${calendarAccountSafeName}.type" = "caldav";
+      "calendar.registry.${calendarAccountSafeName}.uri" = config.accounts.calendar.accounts.${cal.name}.remote.url;
+      "calendar.registry.${calendarAccountSafeName}.username" = config.accounts.calendar.accounts.${cal.name}.remote.userName;
+    };
+  in lib.attrsets.mergeAttrsList (
+    map (cal: makeThunderbirdCalendar cal) calendars
+  ) // {
+
+    "calendar.registry.sleep-as-android.cache.enabled" = true;
+    "calendar.registry.sleep-as-android.calendar-main-in-composite" = true;
+    "calendar.registry.sleep-as-android.color" = "#222233";
+    "calendar.registry.sleep-as-android.name" = "Sleep As Android";
+    "calendar.registry.sleep-as-android.type" = "ics";
+    "calendar.registry.sleep-as-android.readOnly" = true;
+    "calendar.registry.sleep-as-android.uri" = secrets.calendar.sleep-as-android-url;
+  
+    "calendar.list.sortOrder" = lib.fold (cal: acc: cal.name + " " + acc) "" calendars;
+
+    # Keep these after removing the above.
+    "calendar.week.start" = 1;
+  };
+}
diff --git a/home.nix b/home.nix
index ff7b659..45f0168 100644
--- a/home.nix
+++ b/home.nix
@@ -4,6 +4,7 @@
     ./home-modules/auto-mount.nix
     ./home-modules/bash.nix
     ./home-modules/bitwarden.nix
+    ./home-modules/calendar.nix
     ./home-modules/chatterino.nix
     ./home-modules/color-pallete.nix
     ./home-modules/direnv.nix
@@ -99,7 +100,6 @@
     ghostscript
     
     inputs.zen-browser.packages."${system}".default
-    gnome-calendar
     
   ] ++ (with pkgs-unstable; [
     obsidian