diff --git a/packages/tinybird/datasources/mv__dns_status_15m__v0.datasource b/packages/tinybird/datasources/mv__dns_status_15m__v0.datasource
index bf020ffb8..0a7593f31 100644
--- a/packages/tinybird/datasources/mv__dns_status_15m__v0.datasource
+++ b/packages/tinybird/datasources/mv__dns_status_15m__v0.datasource
@@ -11,4 +11,4 @@ SCHEMA >
 ENGINE "AggregatingMergeTree"
 ENGINE_PARTITION_KEY "toYYYYMM(time)"
 ENGINE_SORTING_KEY "monitorId, time"
-ENGINE_TTL "time + toIntervalDay(46)"
+ENGINE_TTL "time + toIntervalDay(47)"
diff --git a/packages/tinybird/datasources/mv__grpc_status_15m__v0.datasource b/packages/tinybird/datasources/mv__grpc_status_15m__v0.datasource
index 5b20b8b93..138327c35 100644
--- a/packages/tinybird/datasources/mv__grpc_status_15m__v0.datasource
+++ b/packages/tinybird/datasources/mv__grpc_status_15m__v0.datasource
@@ -11,4 +11,4 @@ SCHEMA >
 ENGINE "AggregatingMergeTree"
 ENGINE_PARTITION_KEY "toYYYYMM(time)"
 ENGINE_SORTING_KEY "monitorId, time"
-ENGINE_TTL "time + toIntervalDay(46)"
+ENGINE_TTL "time + toIntervalDay(47)"
diff --git a/packages/tinybird/datasources/mv__http_status_15m__v0.datasource b/packages/tinybird/datasources/mv__http_status_15m__v0.datasource
index b9c5643f9..8a0d33369 100644
--- a/packages/tinybird/datasources/mv__http_status_15m__v0.datasource
+++ b/packages/tinybird/datasources/mv__http_status_15m__v0.datasource
@@ -11,4 +11,4 @@ SCHEMA >
 ENGINE "AggregatingMergeTree"
 ENGINE_PARTITION_KEY "toYYYYMM(time)"
 ENGINE_SORTING_KEY "monitorId, time"
-ENGINE_TTL "time + toIntervalDay(46)"
+ENGINE_TTL "time + toIntervalDay(47)"
diff --git a/packages/tinybird/datasources/mv__icmp_status_15m__v0.datasource b/packages/tinybird/datasources/mv__icmp_status_15m__v0.datasource
index 685e2743b..fe396789c 100644
--- a/packages/tinybird/datasources/mv__icmp_status_15m__v0.datasource
+++ b/packages/tinybird/datasources/mv__icmp_status_15m__v0.datasource
@@ -11,4 +11,4 @@ SCHEMA >
 ENGINE "AggregatingMergeTree"
 ENGINE_PARTITION_KEY "toYYYYMM(time)"
 ENGINE_SORTING_KEY "monitorId, time"
-ENGINE_TTL "time + toIntervalDay(46)"
+ENGINE_TTL "time + toIntervalDay(47)"
diff --git a/packages/tinybird/datasources/mv__tcp_status_15m__v0.datasource b/packages/tinybird/datasources/mv__tcp_status_15m__v0.datasource
index 76e73bd95..40e4e0abc 100644
--- a/packages/tinybird/datasources/mv__tcp_status_15m__v0.datasource
+++ b/packages/tinybird/datasources/mv__tcp_status_15m__v0.datasource
@@ -11,4 +11,4 @@ SCHEMA >
 ENGINE "AggregatingMergeTree"
 ENGINE_PARTITION_KEY "toYYYYMM(time)"
 ENGINE_SORTING_KEY "monitorId, time"
-ENGINE_TTL "time + toIntervalDay(46)"
+ENGINE_TTL "time + toIntervalDay(47)"
diff --git a/packages/tinybird/endpoints/endpoint__dns_status_15m__v0.pipe b/packages/tinybird/endpoints/endpoint__dns_status_15m__v0.pipe
index ce72f612b..ef493021d 100644
--- a/packages/tinybird/endpoints/endpoint__dns_status_15m__v0.pipe
+++ b/packages/tinybird/endpoints/endpoint__dns_status_15m__v0.pipe
@@ -14,7 +14,8 @@ SELECT
 FROM mv__dns_status_15m__v0
 WHERE monitorId IN {{ Array(monitorIds, 'String', '1,666') }}
     -- start at a local midnight so the oldest day is complete, not cut at the
-    -- 46-day TTL edge; stays inside the TTL for every zone (at most 45d + 14h)
+    -- TTL edge; the bound is under 46d + 1h for every zone (45 local days, one
+    -- of them 25h after a DST fall-back, plus today so far) and the TTL is 47d
     AND time >= toStartOfDay(toTimeZone(now(), tz)) - INTERVAL 45 DAY
 GROUP BY day, monitorId
 ORDER BY day DESC
diff --git a/packages/tinybird/endpoints/endpoint__grpc_status_15m__v0.pipe b/packages/tinybird/endpoints/endpoint__grpc_status_15m__v0.pipe
index cb821e87c..41aa7d4c7 100644
--- a/packages/tinybird/endpoints/endpoint__grpc_status_15m__v0.pipe
+++ b/packages/tinybird/endpoints/endpoint__grpc_status_15m__v0.pipe
@@ -14,7 +14,8 @@ SELECT
 FROM mv__grpc_status_15m__v0
 WHERE monitorId IN {{ Array(monitorIds, 'String', '1,666') }}
     -- start at a local midnight so the oldest day is complete, not cut at the
-    -- 46-day TTL edge; stays inside the TTL for every zone (at most 45d + 14h)
+    -- TTL edge; the bound is under 46d + 1h for every zone (45 local days, one
+    -- of them 25h after a DST fall-back, plus today so far) and the TTL is 47d
     AND time >= toStartOfDay(toTimeZone(now(), tz)) - INTERVAL 45 DAY
 GROUP BY day, monitorId
 ORDER BY day DESC
diff --git a/packages/tinybird/endpoints/endpoint__http_status_15m__v0.pipe b/packages/tinybird/endpoints/endpoint__http_status_15m__v0.pipe
index 54fc7e8b2..5f25e5a00 100644
--- a/packages/tinybird/endpoints/endpoint__http_status_15m__v0.pipe
+++ b/packages/tinybird/endpoints/endpoint__http_status_15m__v0.pipe
@@ -14,7 +14,8 @@ SELECT
 FROM mv__http_status_15m__v0
 WHERE monitorId IN {{ Array(monitorIds, 'String', '1,666') }}
     -- start at a local midnight so the oldest day is complete, not cut at the
-    -- 46-day TTL edge; stays inside the TTL for every zone (at most 45d + 14h)
+    -- TTL edge; the bound is under 46d + 1h for every zone (45 local days, one
+    -- of them 25h after a DST fall-back, plus today so far) and the TTL is 47d
     AND time >= toStartOfDay(toTimeZone(now(), tz)) - INTERVAL 45 DAY
 GROUP BY day, monitorId
 ORDER BY day DESC
diff --git a/packages/tinybird/endpoints/endpoint__icmp_status_15m__v0.pipe b/packages/tinybird/endpoints/endpoint__icmp_status_15m__v0.pipe
index 99d5eb70d..1964364aa 100644
--- a/packages/tinybird/endpoints/endpoint__icmp_status_15m__v0.pipe
+++ b/packages/tinybird/endpoints/endpoint__icmp_status_15m__v0.pipe
@@ -14,7 +14,8 @@ SELECT
 FROM mv__icmp_status_15m__v0
 WHERE monitorId IN {{ Array(monitorIds, 'String', '1,666') }}
     -- start at a local midnight so the oldest day is complete, not cut at the
-    -- 46-day TTL edge; stays inside the TTL for every zone (at most 45d + 14h)
+    -- TTL edge; the bound is under 46d + 1h for every zone (45 local days, one
+    -- of them 25h after a DST fall-back, plus today so far) and the TTL is 47d
     AND time >= toStartOfDay(toTimeZone(now(), tz)) - INTERVAL 45 DAY
 GROUP BY day, monitorId
 ORDER BY day DESC
diff --git a/packages/tinybird/endpoints/endpoint__tcp_status_15m__v0.pipe b/packages/tinybird/endpoints/endpoint__tcp_status_15m__v0.pipe
index ae4cbddbd..b63225dee 100644
--- a/packages/tinybird/endpoints/endpoint__tcp_status_15m__v0.pipe
+++ b/packages/tinybird/endpoints/endpoint__tcp_status_15m__v0.pipe
@@ -14,7 +14,8 @@ SELECT
 FROM mv__tcp_status_15m__v0
 WHERE monitorId IN {{ Array(monitorIds, 'String', '1,666') }}
     -- start at a local midnight so the oldest day is complete, not cut at the
-    -- 46-day TTL edge; stays inside the TTL for every zone (at most 45d + 14h)
+    -- TTL edge; the bound is under 46d + 1h for every zone (45 local days, one
+    -- of them 25h after a DST fall-back, plus today so far) and the TTL is 47d
     AND time >= toStartOfDay(toTimeZone(now(), tz)) - INTERVAL 45 DAY
 GROUP BY day, monitorId
 ORDER BY day DESC
diff --git a/packages/tinybird/src/client.test.ts b/packages/tinybird/src/client.test.ts
index cf40311ec..b8e06cc9b 100644
--- a/packages/tinybird/src/client.test.ts
+++ b/packages/tinybird/src/client.test.ts
@@ -194,7 +194,7 @@ describe("status15mParameters", () => {
   });
 
   test("rejects zone names ClickHouse would 400 on, before the request", () => {
-    for (const timezone of ["Mars/Olympus", "", "GMT+1"]) {
+    for (const timezone of ["Mars/Olympus", "", "GMT+1", "+05:30", "-03:00"]) {
       const result = status15mParameters.safeParse({
         monitorIds: ["1"],
         timezone,
diff --git a/packages/tinybird/src/client.ts b/packages/tinybird/src/client.ts
index cbcbf18bd..565acea63 100644
--- a/packages/tinybird/src/client.ts
+++ b/packages/tinybird/src/client.ts
@@ -18,6 +18,8 @@ const REVALIDATE = env.NODE_ENV === "development" ? DEV_CACHE : 0;
 const timeZoneValidity = new Map<string, boolean>();
 
 export function isValidTimeZone(timeZone: string): boolean {
+  // Intl also takes `+05:30`-style offsets; ClickHouse only knows zone names.
+  if (/^[+-]/.test(timeZone)) return false;
   let valid = timeZoneValidity.get(timeZone);
   if (valid === undefined) {
     try {