diff --git a/tp-date-input.js b/tp-date-input.js
index 65e6830..289c79e 100644
--- a/tp-date-input.js
+++ b/tp-date-input.js
@@ -292,7 +292,7 @@ class TpDateInput extends EventHelpers(ControlState(FormElement(LitElement))) {
     }
 
     // Convert luxon format to match input assignment
-    const luxonFormat = this._inputAssign.map(part => {
+    const format = this._inputAssign.map(part => {
       switch (part) {
         case 'MM': return 'LL';
         case 'dd': return 'dd';
@@ -301,17 +301,18 @@ class TpDateInput extends EventHelpers(ControlState(FormElement(LitElement))) {
       }
     }).join('-');
 
-    // Parse the date in the specified timezone (or local if not set).
-    // This interprets the entered values as being in that timezone.
-    const dt = DateTime.fromFormat(i0 + '-' + i1 + '-' + i2, luxonFormat, { zone: this.timeZone || 'local' });
+    // Parse the entered values as a plain calendar date, then store as UTC midnight.
+    // Date-only fields are timezone-agnostic — April 7 means April 7 for everyone.
+    const dt = DateTime.fromFormat(i0 + '-' + i1 + '-' + i2, format);
 
     if (dt.isValid) {
       this.inputs[0].invalid = false;
       this.inputs[1].invalid = false;
       this.inputs[2].invalid = false;
-      
-      this.date = dt.toJSDate();
-      this.value = dt.toUTC().toISO();
+
+      const utcMidnight = DateTime.utc(dt.year, dt.month, dt.day);
+      this.date = utcMidnight.toJSDate();
+      this.value = utcMidnight.toISO();
       this.invalid = false;
       this.dispatchEvent(new CustomEvent('value-changed', { detail: this.value, bubbles: true, composed: true }));
     } else {
@@ -467,12 +468,8 @@ class TpDateInput extends EventHelpers(ControlState(FormElement(LitElement))) {
 
     let dt = this._toDateTime(this.value);
     if (dt && dt.isValid) {
-      // Convert to user's timezone for display (input values are expected to be UTC)
-      if (this.timeZone) {
-        dt = dt.setZone(this.timeZone);
-      }
-      
-      // Convert luxon format parts to match display format
+      // Values are stored as UTC midnight — display the UTC calendar date as-is.
+      dt = dt.toUTC();
       this._input0 = dt.toFormat(this._getLuxonFormat(this._inputAssign[0]));
       this._input1 = dt.toFormat(this._getLuxonFormat(this._inputAssign[1]));
       this._input2 = dt.toFormat(this._getLuxonFormat(this._inputAssign[2]));
@@ -493,7 +490,8 @@ class TpDateInput extends EventHelpers(ControlState(FormElement(LitElement))) {
     if (this.today) {
       setTimeout(() => {
         if (!this.value) {
-          this.value = DateTime.now().toISO();
+          const now = DateTime.utc();
+          this.value = DateTime.utc(now.year, now.month, now.day).toISO();
         }
       });
     }