diff --git a/backend/db/user.go b/backend/db/user.go
index dd222a9..7f6834e 100644
--- a/backend/db/user.go
+++ b/backend/db/user.go
@@ -555,9 +555,10 @@ func (db *DB) UpdateUser(
 	memberTitle *string, listPrivate *bool,
 	links *[]string,
 	avatar *string,
+	timezone *string,
 	customPreferences *CustomPreferences,
 ) (u User, err error) {
-	if displayName == nil && bio == nil && links == nil && avatar == nil && memberTitle == nil && listPrivate == nil && customPreferences == nil {
+	if displayName == nil && bio == nil && links == nil && avatar == nil && memberTitle == nil && listPrivate == nil && timezone == nil && customPreferences == nil {
 		sql, args, err := sq.Select("*").From("users").Where("id = ?", id).ToSql()
 		if err != nil {
 			return u, errors.Wrap(err, "building sql")
@@ -593,6 +594,13 @@ func (db *DB) UpdateUser(
 			builder = builder.Set("member_title", *memberTitle)
 		}
 	}
+	if timezone != nil {
+		if *timezone == "" {
+			builder = builder.Set("timezone", nil)
+		} else {
+			builder = builder.Set("timezone", *timezone)
+		}
+	}
 	if links != nil {
 		builder = builder.Set("links", *links)
 	}
diff --git a/backend/routes/user/patch_user.go b/backend/routes/user/patch_user.go
index a5c634c..a07f6e9 100644
--- a/backend/routes/user/patch_user.go
+++ b/backend/routes/user/patch_user.go
@@ -25,6 +25,7 @@ type PatchUserRequest struct {
 	Pronouns          *[]db.PronounEntry    `json:"pronouns"`
 	Fields            *[]db.Field           `json:"fields"`
 	Avatar            *string               `json:"avatar"`
+	Timezone          *string               `json:"timezone"`
 	ListPrivate       *bool                 `json:"list_private"`
 	CustomPreferences *db.CustomPreferences `json:"custom_preferences"`
 	Flags             *[]xid.ID             `json:"flags"`
@@ -91,6 +92,19 @@ func (s *Server) patchUser(w http.ResponseWriter, r *http.Request) error {
 		}
 	}
 
+	// validate timezone
+	if req.Timezone != nil {
+		if *req.Timezone != "" {
+			_, err := time.LoadLocation(*req.Timezone)
+			if err != nil {
+				return server.APIError{
+					Code:    server.ErrBadRequest,
+					Details: fmt.Sprintf("%q is not a valid timezone", *req.Timezone),
+				}
+			}
+		}
+	}
+
 	// validate links
 	if req.Links != nil {
 		if len(*req.Links) > db.MaxUserLinksLength {
@@ -224,7 +238,7 @@ func (s *Server) patchUser(w http.ResponseWriter, r *http.Request) error {
 		}
 	}
 
-	u, err = s.DB.UpdateUser(ctx, tx, claims.UserID, req.DisplayName, req.Bio, req.MemberTitle, req.ListPrivate, req.Links, avatarHash, req.CustomPreferences)
+	u, err = s.DB.UpdateUser(ctx, tx, claims.UserID, req.DisplayName, req.Bio, req.MemberTitle, req.ListPrivate, req.Links, avatarHash, req.Timezone, req.CustomPreferences)
 	if err != nil && errors.Cause(err) != db.ErrNothingToUpdate {
 		log.Errorf("updating user: %v", err)
 		return err
diff --git a/frontend/src/lib/api/entities.ts b/frontend/src/lib/api/entities.ts
index 523cc0e..d4e6b7a 100644
--- a/frontend/src/lib/api/entities.ts
+++ b/frontend/src/lib/api/entities.ts
@@ -57,6 +57,7 @@ export interface MeUser extends User {
   fediverse_instance: string | null;
   list_private: boolean;
   last_sid_reroll: string;
+  timezone: string | null;
 }
 
 export interface Field {
diff --git a/frontend/src/routes/edit/profile/+page.svelte b/frontend/src/routes/edit/profile/+page.svelte
index da01fe3..b4b7673 100644
--- a/frontend/src/routes/edit/profile/+page.svelte
+++ b/frontend/src/routes/edit/profile/+page.svelte
@@ -21,14 +21,16 @@
     CardBody,
     CardHeader,
     FormGroup,
+    InputGroup,
     Icon,
     Input,
     Popover,
     TabContent,
     TabPane,
+    InputGroupText,
   } from "sveltestrap";
   import { encode } from "base64-arraybuffer";
-  import { DateTime } from "luxon";
+  import { DateTime, FixedOffsetZone } from "luxon";
   import { apiFetchClient } from "$lib/api/fetch";
   import { PUBLIC_SHORT_BASE } from "$env/static/public";
   import IconButton from "$lib/components/IconButton.svelte";
@@ -60,6 +62,7 @@
   let flags: PrideFlag[] = window.structuredClone(data.user.flags);
   let list_private = data.user.list_private;
   let custom_preferences = window.structuredClone(data.user.custom_preferences);
+  let timezone = data.user.timezone;
 
   let avatar: string | null;
   let avatar_files: FileList | null;
@@ -98,6 +101,7 @@
     member_title,
     list_private,
     custom_preferences,
+    timezone,
   );
   $: getAvatar(avatar_files).then((b64) => (avatar = b64));
 
@@ -114,6 +118,7 @@
     member_title: string,
     list_private: boolean,
     custom_preferences: CustomPreferences,
+    timezone: string | null,
   ) => {
     if (bio !== (user.bio || "")) return true;
     if (display_name !== (user.display_name || "")) return true;
@@ -126,6 +131,7 @@
     if (!customPreferencesEqual(custom_preferences, user.custom_preferences)) return true;
     if (avatar !== null) return true;
     if (list_private !== user.list_private) return true;
+    if (timezone !== user.timezone) return true;
 
     return false;
   };
@@ -208,6 +214,24 @@
     return uri;
   };
 
+  let currentTime = "";
+  let displayTimezone = "";
+  $: setTime(timezone);
+
+  const setTime = (timezone: string | null) => {
+    if (!timezone) {
+      currentTime = "";
+      displayTimezone = "";
+      return;
+    }
+
+    const offset = DateTime.now().setZone(timezone).offset;
+    const zone = FixedOffsetZone.instance(offset);
+
+    currentTime = now.setZone(zone).toLocaleString(DateTime.TIME_SIMPLE);
+    displayTimezone = zone.formatOffset(now.toUnixInteger(), "narrow");
+  };
+
   const moveName = (index: number, up: boolean) => {
     if (up && index == 0) return;
     if (!up && index == names.length - 1) return;
@@ -361,6 +385,7 @@
         fields,
         member_title,
         list_private,
+        timezone: timezone || "",
         custom_preferences,
         flags: flags.map((flag) => flag.id),
       });
@@ -403,6 +428,10 @@
     addToast({ body: "Copied the short link to your clipboard!", duration: 2000 });
   };
 
+  const detectTimezone = () => {
+    timezone = DateTime.local().zoneName;
+  };
+
   interface SnapshotData {
     bio: string;
     display_name: string;
@@ -413,6 +442,7 @@
     fields: Field[];
     flags: PrideFlag[];
     list_private: boolean;
+    timezone: string | null;
     custom_preferences: CustomPreferences;
 
     avatar: string | null;
@@ -432,6 +462,7 @@
       fields,
       flags,
       list_private,
+      timezone,
       custom_preferences,
       avatar,
       newName,
@@ -448,6 +479,7 @@
       fields = value.fields;
       flags = value.flags;
       list_private = value.list_private;
+      timezone = value.timezone;
       custom_preferences = value.custom_preferences;
       avatar = value.avatar;
       newName = value.newName;
@@ -787,6 +819,31 @@
             <code class="text-nowrap">pronouns.cc/@{data.user.name}/[member-name]</code>.
           </strong>
         </p>
+        <hr />
+        <div class="m-1">
+          <p class="mt-1 my-2">
+            You can optionally set your timezone, which will show your current local time on your
+            profile.
+          </p>
+          <InputGroup>
+            <InputGroupText><Icon name="clock" aria-hidden /></InputGroupText>
+            <Input disabled value={timezone !== null ? timezone : "Unset"} />
+            <Button on:click={detectTimezone}>Detect</Button>
+            <Button on:click={() => (timezone = null)}>Reset</Button>
+          </InputGroup>
+          <p class="mt-2">
+            {#if timezone}
+              This will show up on your profile like this:
+              <Icon name="clock" aria-hidden />
+              {currentTime} <span class="text-body-secondary">(UTC{displayTimezone})</span>
+              <br />
+            {/if}
+            <span class="text-muted">
+              Your timezone is never shared directly, only the difference between UTC and your
+              current timezone is.
+            </span>
+          </p>
+        </div>
       </div>
     </div>
     <div>
diff --git a/frontend/vite.config.ts b/frontend/vite.config.ts
index 7d8ed95..5f528ea 100644
--- a/frontend/vite.config.ts
+++ b/frontend/vite.config.ts
@@ -5,6 +5,7 @@ import { plugin as markdown, Mode as MarkdownMode } from "vite-plugin-markdown";
 export default defineConfig({
   plugins: [sveltekit(), markdown({ mode: [MarkdownMode.HTML] })],
   server: {
+    host: "127.0.0.1",
     proxy: {
       "/api": {
         target: "http://localhost:8080",
diff --git a/scripts/seeddb/main.go b/scripts/seeddb/main.go
index 3755617..d18b354 100644
--- a/scripts/seeddb/main.go
+++ b/scripts/seeddb/main.go
@@ -48,7 +48,7 @@ func run(c *cli.Context) error {
 		return err
 	}
 
-	_, err = pg.UpdateUser(ctx, tx, u.ID, ptr("testing"), ptr("This is a bio!"), nil, ptr(false), &[]string{"https://pronouns.cc"}, nil, nil)
+	_, err = pg.UpdateUser(ctx, tx, u.ID, ptr("testing"), ptr("This is a bio!"), nil, ptr(false), &[]string{"https://pronouns.cc"}, nil, nil, nil)
 	if err != nil {
 		fmt.Println("error setting user info:", err)
 		return err