diff --git a/sitio/src/lib/HeatmapHours.svelte b/sitio/src/lib/HeatmapHours.svelte
new file mode 100644
index 0000000..daa77d2
--- /dev/null
+++ b/sitio/src/lib/HeatmapHours.svelte
@@ -0,0 +1,66 @@
+<script lang="ts">
+  export let matrix: number[][]; // 7 x 24, dayjs().day() indexing (0=Sunday)
+  export let title: string = "Horas típicas de actividad (UTC-3)";
+
+  const weekdays = [
+    "Dom",
+    "Lun",
+    "Mar",
+    "Mié",
+    "Jue",
+    "Vie",
+    "Sáb",
+  ];
+
+  const hours = Array.from({ length: 24 }, (_, h) => h);
+
+  $: max = Math.max(0, ...matrix.flat());
+
+  function colorFor(value: number) {
+    if (max === 0) return "#e5e7eb"; // neutral-200
+    const t = value / max;
+    // simple sequential palette from light to dark orange
+    if (t === 0) return "#f3f4f6"; // neutral-100
+    if (t < 0.2) return "#fde7d9";
+    if (t < 0.4) return "#fdcdb3";
+    if (t < 0.6) return "#fca36b";
+    if (t < 0.8) return "#f77f00";
+    return "#d65a00";
+  }
+</script>
+
+<div class="flex w-full flex-col gap-3">
+  <div class="flex items-center justify-between">
+    <h3 class="text-lg font-semibold">{title}</h3>
+    <span class="text-xs text-muted-foreground">Zona horaria: UTC-3</span>
+  </div>
+
+  <div class="overflow-x-auto">
+    <div class="grid" style="grid-template-columns: 48px repeat(24, minmax(20px,1fr));">
+      <div></div>
+      {#each hours as h}
+        <div class="text-center text-[10px] text-muted-foreground">{h}</div>
+      {/each}
+
+      {#each matrix as row, dow}
+        <div class="sticky left-0 z-10 bg-transparent pr-2 text-right text-xs">{weekdays[dow]}</div>
+        {#each row as value}
+          <div class="aspect-square border border-neutral-200 dark:border-neutral-700" style={`background:${colorFor(value)}`}
+            title={`${weekdays[dow]} ${value} interacciones`}></div>
+        {/each}
+      {/each}
+    </div>
+  </div>
+
+  <div class="flex items-center gap-2 self-end text-xs text-muted-foreground">
+    <span>menos</span>
+    <div class="h-3 w-3" style="background:#f3f4f6"></div>
+    <div class="h-3 w-3" style="background:#fde7d9"></div>
+    <div class="h-3 w-3" style="background:#fdcdb3"></div>
+    <div class="h-3 w-3" style="background:#fca36b"></div>
+    <div class="h-3 w-3" style="background:#f77f00"></div>
+    <div class="h-3 w-3" style="background:#d65a00"></div>
+    <span>más</span>
+  </div>
+</div>
+
diff --git a/sitio/src/routes/+page.server.ts b/sitio/src/routes/+page.server.ts
index b8745b4..1843028 100644
--- a/sitio/src/routes/+page.server.ts
+++ b/sitio/src/routes/+page.server.ts
@@ -4,7 +4,6 @@ import * as schema from "../schema";
 import type { PageServerLoad } from "./$types";
 import { dayjs, likesCutoffSql } from "$lib/consts";
 import { error, redirect } from "@sveltejs/kit";
-import { getLastWeek } from "$lib/data-processing/weekly";
 import { getStatsForDaysInTimePeriod } from "@/data-processing/days";
 
 const tz = "America/Argentina/Buenos_Aires";
@@ -25,7 +24,7 @@ function getStartingFrom(query: string) {
   }
 }
 
-export const load: PageServerLoad = async ({ params, url, setHeaders }) => {
+export const load = (async ({ url, setHeaders }) => {
   const query =
     url.searchParams.get("q") ?? "date:" + dayjs().tz(tz).format("YYYY-MM-DD");
   const startingFrom = getStartingFrom(query);
@@ -116,6 +115,44 @@ export const load: PageServerLoad = async ({ params, url, setHeaders }) => {
   const t1 = performance.now();
   console.log("queries", t1 - t0);
 
+  // Build 7x24 heatmap (UTC-3) over last 60 days using retweets and available likes
+  const heatmapStart = dayjs().tz(tz).subtract(60, "day").startOf("day");
+  const heatmapEnd = dayjs().tz(tz).endOf("day");
+  const [heatLikes, heatRetweets]: [
+    Array<{ firstSeenAt: Date }>,
+    Array<{ retweetAt: Date }>,
+  ] = await Promise.all([
+    db.query.likedTweets.findMany({
+      columns: { firstSeenAt: true },
+      where: and(
+        gte(schema.likedTweets.firstSeenAt, heatmapStart.toDate()),
+        lte(schema.likedTweets.firstSeenAt, heatmapEnd.toDate()),
+        likesCutoffSql,
+      ),
+      orderBy: desc(schema.likedTweets.firstSeenAt),
+    }),
+    db.query.retweets.findMany({
+      columns: { retweetAt: true },
+      where: and(
+        gte(schema.retweets.retweetAt, heatmapStart.toDate()),
+        lte(schema.retweets.retweetAt, heatmapEnd.toDate()),
+      ),
+      orderBy: desc(schema.retweets.retweetAt),
+    }),
+  ]);
+
+  const hourHeatmap: number[][] = Array.from({ length: 7 }, () =>
+    Array(24).fill(0),
+  );
+  const addToHeat = (d: Date) => {
+    const x = dayjs(d).tz(tz);
+    const dow = x.day();
+    const hour = x.hour();
+    hourHeatmap[dow][hour]++;
+  };
+  heatLikes.forEach((t: { firstSeenAt: Date }) => addToHeat(t.firstSeenAt));
+  heatRetweets.forEach((t: { retweetAt: Date }) => addToHeat(t.retweetAt));
+
   if (
     likedTweets.length === 0 &&
     retweets.length === 0 &&
@@ -145,5 +182,6 @@ export const load: PageServerLoad = async ({ params, url, setHeaders }) => {
     monthData,
     hasNextMonth: !!hasNextMonth,
     query,
+    hourHeatmap,
   };
-};
+}) satisfies PageServerLoad;
diff --git a/sitio/src/routes/+page.svelte b/sitio/src/routes/+page.svelte
index 1a3c774..9f1c65c 100644
--- a/sitio/src/routes/+page.svelte
+++ b/sitio/src/routes/+page.svelte
@@ -36,6 +36,7 @@
   import { parseDate } from "@internationalized/date";
   import StatsCalendar from "@/StatsCalendar.svelte";
   import StatsCalendarNavigation from "@/StatsCalendarNavigation.svelte";
+  import HeatmapHours from "$lib/HeatmapHours.svelte";
 
   export let data: PageData;
 
@@ -169,6 +170,18 @@
     </div>
   </section>
 
+  <section class="mx-auto w-full max-w-2xl">
+    <div class="mx-2 my-4 rounded-lg bg-neutral-100 p-4 dark:bg-neutral-800">
+      <h2 class="mb-2 text-center text-xl font-bold md:text-3xl">
+        ¿Cuándo suele estar activo en Twitter? (UTC-3)
+      </h2>
+      <p class="mb-4 text-center text-sm text-muted-foreground">
+        Basado en retweets y likes de los últimos 60 días.
+      </p>
+      <HeatmapHours matrix={data.hourHeatmap} />
+    </div>
+  </section>
+
   {#if dudoso}
     <section class="mx-auto w-full max-w-2xl">
       <p class="text-center text-sm">