diff --git a/frontend/src/routes/joins/[slug]/+page.server.ts b/frontend/src/routes/joins/[slug]/+page.server.ts
index 33723150fe..fb9c82ce8d 100644
--- a/frontend/src/routes/joins/[slug]/+page.server.ts
+++ b/frontend/src/routes/joins/[slug]/+page.server.ts
@@ -5,8 +5,8 @@ import { parseDateRangeParams } from '$lib/util/date-ranges';
 import { getMetricTypeFromParams, type MetricType } from '$lib/types/MetricType/MetricType';
 import { getSortDirection, sortDrift, type SortDirection } from '$lib/util/sort';
 
-const FALLBACK_START_TS = 1698796800000; // 2023-11-01
-const FALLBACK_END_TS = 1703980800000; // 2023-12-31
+const FALLBACK_START_TS = 1672531200000; // 2023-01-01
+const FALLBACK_END_TS = 1677628800000; // 2023-03-01
 
 export const load: PageServerLoad = async ({
 	params,
diff --git a/spark/src/main/scala/ai/chronon/spark/scripts/ObservabilityDemoDataLoader.scala b/spark/src/main/scala/ai/chronon/spark/scripts/ObservabilityDemoDataLoader.scala
index 258533a6ed..8bf4f52190 100644
--- a/spark/src/main/scala/ai/chronon/spark/scripts/ObservabilityDemoDataLoader.scala
+++ b/spark/src/main/scala/ai/chronon/spark/scripts/ObservabilityDemoDataLoader.scala
@@ -37,13 +37,13 @@ object ObservabilityDemoDataLoader {
 
     val endDs: ScallopOption[String] = opt[String](
       name = "end-ds",
-      default = Some("2024-01-01"),
+      default = Some("2023-03-01"),
       descr = "End date in YYYY-MM-DD format"
     )
 
     val rowCount: ScallopOption[Int] = opt[Int](
       name = "row-count",
-      default = Some(1400000),
+      default = Some(700000),
       descr = "Number of rows to generate"
     )