diff --git a/app/api/administrator/bookings/one-time/route.ts b/app/api/administrator/bookings/one-time/route.ts
index 1d08fe1..1f3413e 100644
--- a/app/api/administrator/bookings/one-time/route.ts
+++ b/app/api/administrator/bookings/one-time/route.ts
@@ -1,7 +1,7 @@
 import { createClient } from '@/lib/supabase/server'
 import { createClient as createAdminClient } from '@supabase/supabase-js'
 import { NextResponse } from 'next/server'
-import { sendMissedReservationEmail, formatDateLong } from '@/lib/emails/missed-reservation'
+import { sendMissedReservationEmail } from '@/lib/emails/missed-reservation'
 import { sendBookingUpdatedEmail } from '@/lib/emails/booking-updated'
 import { sendBookingCreatedEmail } from '@/lib/emails/booking-created'
 import { changed, collectChanges, formatDate, formatTime } from '@/lib/emails/changes'
@@ -315,7 +315,8 @@ export async function PATCH(request: Request) {
 
           await sendMissedReservationEmail({
             bodyName,
-            date: formatDateLong(firstSession.booking_date),
+            date: firstSession.booking_date,
+            roomOrTable: firstSession.room_name,
             startTime: firstSession.start_time,
             endTime: firstSession.end_time,
             contacts,
diff --git a/app/api/administrator/bookings/tabling/route.ts b/app/api/administrator/bookings/tabling/route.ts
index 5b7b7d1..6b18f36 100644
--- a/app/api/administrator/bookings/tabling/route.ts
+++ b/app/api/administrator/bookings/tabling/route.ts
@@ -1,7 +1,7 @@
 import { createClient } from '@/lib/supabase/server'
 import { createClient as createAdminClient } from '@supabase/supabase-js'
 import { NextResponse } from 'next/server'
-import { sendMissedReservationEmail, formatDateLong } from '@/lib/emails/missed-reservation'
+import { sendMissedReservationEmail } from '@/lib/emails/missed-reservation'
 import { sendBookingUpdatedEmail } from '@/lib/emails/booking-updated'
 import { sendBookingCreatedEmail } from '@/lib/emails/booking-created'
 import { changed, collectChanges, formatDate, formatTime } from '@/lib/emails/changes'
@@ -325,7 +325,8 @@ export async function PATCH(request: Request) {
 
           await sendMissedReservationEmail({
             bodyName,
-            date: formatDateLong(sessions[0].session_date),
+            date: sessions[0].session_date,
+            roomOrTable: sessions[0].location,
             startTime: sessions[0].start_time,
             endTime: sessions[0].end_time,
             contacts,
diff --git a/app/api/administrator/bookings/weekly/route.ts b/app/api/administrator/bookings/weekly/route.ts
index 9608c04..89f5b92 100644
--- a/app/api/administrator/bookings/weekly/route.ts
+++ b/app/api/administrator/bookings/weekly/route.ts
@@ -1,7 +1,7 @@
 import { createClient } from '@/lib/supabase/server'
 import { createClient as createAdminClient } from '@supabase/supabase-js'
 import { NextResponse } from 'next/server'
-import { sendMissedReservationEmail, formatDateLong } from '@/lib/emails/missed-reservation'
+import { sendMissedReservationEmail } from '@/lib/emails/missed-reservation'
 import { sendBookingUpdatedEmail } from '@/lib/emails/booking-updated'
 import { sendBookingCreatedEmail } from '@/lib/emails/booking-created'
 import { changed, collectChanges, formatDate, formatTime } from '@/lib/emails/changes'
@@ -437,8 +437,25 @@ export async function PATCH(request: Request) {
     .eq('booking_id', booking_id)
     .eq('status', 'Pending')
 
-  const isMissed = status === 'Missed' || occurrences.some((o: { status: string | null }) => o.status === 'Missed')
-  if (isMissed) {
+  // Which weeks this save actually marked Missed.
+  //
+  // Two things were wrong with asking "is anything Missed" (issue #99). It
+  // described the alert using the series' start date and time no matter which
+  // week had been missed -- the same defect as #91, in the one caller that
+  // rewrite did not reach. And because a missed week stays Missed, the condition
+  // stayed true forever: every later edit to the series sent Operational Affairs
+  // another alert about a week they had been told about weeks earlier.
+  //
+  // movedOccurrences is what this save changed, so a week only alerts on the
+  // edit that missed it.
+  const newlyMissedWeeks = movedOccurrences.filter(o => o.status === 'Missed')
+
+  // A series-level Missed applies to every week at once, so there is no single
+  // week to name and the series is the story. Compared against the stored value
+  // so resubmitting an already-missed series does not re-alert either.
+  const seriesNewlyMissed = status === 'Missed' && prevWeekly?.status !== 'Missed'
+
+  if (seriesNewlyMissed || newlyMissedWeeks.length) {
     waitUntil(
       (async () => {
         try {
@@ -447,13 +464,30 @@ export async function PATCH(request: Request) {
           })
           const contacts = leaders.map(l => l.fullName).filter(Boolean)
 
-          await sendMissedReservationEmail({
-            bodyName,
-            date: formatDateLong(start_date),
-            startTime: start_time,
-            endTime: end_time,
-            contacts,
-          })
+          // One alert per missed reservation rather than one per save. Each
+          // missed room is its own incident for Operational Affairs to chase,
+          // and a single email naming one of several would hide the rest.
+          const missed = seriesNewlyMissed
+            ? [{ date: start_date, startTime: start_time, endTime: end_time, roomOrTable: room_name }]
+            : newlyMissedWeeks.map(o => ({
+                date: o.occurrence_date,
+                // Null on an occurrence means inherit, so these are the values
+                // that actually applied to the week that was missed.
+                startTime: o.start_time ?? start_time,
+                endTime: o.end_time ?? end_time,
+                roomOrTable: o.room_name ?? room_name,
+              }))
+
+          for (const m of missed) {
+            await sendMissedReservationEmail({
+              bodyName,
+              date: m.date,
+              roomOrTable: m.roomOrTable,
+              startTime: m.startTime,
+              endTime: m.endTime,
+              contacts,
+            })
+          }
         } catch (e) {
           console.error('Resend email failed:', e)
         }
diff --git a/lib/emails/missed-reservation.ts b/lib/emails/missed-reservation.ts
index e545eb0..995f061 100644
--- a/lib/emails/missed-reservation.ts
+++ b/lib/emails/missed-reservation.ts
@@ -1,38 +1,55 @@
 import { resend } from '@/lib/resend'
 import { sanitize, buildEmailHtml } from './utils'
+import { formatDate, formatTime } from './changes'
 
+/**
+ * The alert Operational Affairs gets when a reservation is marked Missed.
+ *
+ * This template did not move when the booking emails were rewritten in #79, and
+ * drifted (issue #99). It rendered its times straight out of the payload, so an
+ * alert read "Time of Reservation: 18:30:00 to 20:00:00" where every other
+ * Chambers email said "6:30 PM to 8:00 PM"; it carried a second copy of the date
+ * formatter under a different name; and it took its date already formatted,
+ * which is why the raw times were easy to miss -- the one value the caller
+ * prepared looked right, and the two it passed through did not.
+ *
+ * It now takes raw values and formats them here, like every other template.
+ */
 interface MissedReservationEmailParams {
   bodyName: string
+  /** 'YYYY-MM-DD'. Formatted here, not by the caller. */
   date: string
+  /** 'HH:MM' or 'HH:MM:SS' -- both are formatted the same way. */
   startTime: string
   endTime: string
   contacts: string[]
-}
-
-export function formatDateLong(dateStr: string): string {
-  return new Date(dateStr + 'T00:00:00').toLocaleDateString('en-US', {
-    weekday: 'long',
-    month: 'long',
-    day: 'numeric',
-    year: 'numeric',
-  })
+  /** The room or table that went unused. Omitted when the caller has none. */
+  roomOrTable?: string | null
 }
 
 export async function sendMissedReservationEmail(params: MissedReservationEmailParams) {
-  const { bodyName, date, startTime, endTime, contacts } = params
+  const { bodyName, date, startTime, endTime, contacts, roomOrTable = null } = params
 
   const sBodyName = sanitize(bodyName)
-  const sContacts = contacts.map(sanitize).join(', ')
+  // An em dash, so a list of names cannot read as one hyphenated name, and a
+  // placeholder rather than an empty line when a body has no leadership on file.
+  const sContacts = contacts.length ? contacts.map(sanitize).join(', ') : 'None on file'
+  const sRoomOrTable = roomOrTable ? sanitize(roomOrTable) : null
+
+  const roomText = sRoomOrTable ? `Room/Table: ${sRoomOrTable}\n` : ''
+  const roomHtml = sRoomOrTable ? `<strong>Room/Table:</strong> ${sRoomOrTable}<br>` : ''
 
   await resend.emails.send({
     from: process.env.RESEND_FROM_EMAIL!,
+    // Straight to Operational Affairs rather than bcc'd to a membership: this is
+    // an internal alert about a body, not a notification to it.
     to: process.env.OPS_EMAIL!,
-    subject: 'Chambers Alert - Reservation Missed',
+    subject: 'Chambers — Reservation Missed',
     text: `This is an automatic alert that a SGA reservation was marked as missed by a Chambers administrator.
 
 Responsible Body: ${sBodyName}
-Date of Reservation: ${date}
-Time of Reservation: ${startTime} to ${endTime}
+${roomText}Date of Reservation: ${formatDate(date)}
+Time of Reservation: ${formatTime(startTime)} to ${formatTime(endTime)}
 
 Contacts: ${sContacts}
 
@@ -41,8 +58,8 @@ For further information, please reach out to the Comptroller.`,
       <p style="margin:0 0 16px;">This is an automatic alert that a SGA reservation was marked as missed by a Chambers administrator.</p>
       <p style="margin:0;line-height:1.8;">
         <strong>Responsible Body:</strong> ${sBodyName}<br>
-        <strong>Date of Reservation:</strong> ${date}<br>
-        <strong>Time of Reservation:</strong> ${startTime} to ${endTime}<br>
+        ${roomHtml}<strong>Date of Reservation:</strong> ${formatDate(date)}<br>
+        <strong>Time of Reservation:</strong> ${formatTime(startTime)} to ${formatTime(endTime)}<br>
         <strong>Contacts:</strong> ${sContacts}
       </p>
     `, 'For further information, please reach out to the Comptroller.'),