/resources/ad_group_ad.proto

--- v22/resources/ad_group_ad.proto 2026-03-19 17:15:58.000000000 +0000
+++ v23/resources/ad_group_ad.proto 2026-03-19 17:16:04.000000000 +0000
@@ -72,6 +72,18 @@
   // Immutable. The ad.
   Ad ad = 5 [(google.api.field_behavior) = IMMUTABLE];

+  // The date and time when ad group ad starts serving. This is added on top of
+  // the campaign's start date and time, if present, to further restrict the
+  // duration of an ad group ad. The timestamp is in the customer's time zone
+  // and in "yyyy-MM-dd HH:mm:ss" format. Only supported for some ad types.
+  string start_date_time = 20;
+
+  // The last day and time when ad group ad serves. This is added on top of
+  // the campaign's end date and time, if present, to further restrict the
+  // duration of an ad group ad. The timestamp is in the customer's time zone
+  // and in "yyyy-MM-dd HH:mm:ss" format. Only supported for some ad types.
+  string end_date_time = 21;
+
   // Output only. Policy information for the ad.
   AdGroupAdPolicySummary policy_summary = 6
       [(google.api.field_behavior) = OUTPUT_ONLY];