diff --git a/client/src/components/calendar-list-view.tsx b/client/src/components/calendar-list-view.tsx
index 0ca4a3e..2ddbce7 100644
--- a/client/src/components/calendar-list-view.tsx
+++ b/client/src/components/calendar-list-view.tsx
@@ -42,8 +42,15 @@ export default function CalendarListView({ scheduledPosts, onEditPost, onDeleteP
     return acc;
   }, {});
 
-  // Sort dates
-  const sortedDates = Object.keys(groupedPosts).sort();
+  // Sort dates - put today first, then chronological order
+  const today = format(new Date(), "yyyy-MM-dd");
+  const sortedDates = Object.keys(groupedPosts).sort((a, b) => {
+    // Today always comes first
+    if (a === today && b !== today) return -1;
+    if (b === today && a !== today) return 1;
+    // Otherwise chronological order
+    return a.localeCompare(b);
+  });
 
   const toggleDate = (date: string) => {
     const newExpanded = new Set(expandedDates);
diff --git a/client/src/pages/new-post.tsx b/client/src/pages/new-post.tsx
index 83fd9dc..7a1cdb2 100644
--- a/client/src/pages/new-post.tsx
+++ b/client/src/pages/new-post.tsx
@@ -32,7 +32,7 @@ import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@
 import { Dialog, DialogContent } from "@/components/ui/dialog";
 import { useToast } from "@/hooks/use-toast";
 import { apiRequest, queryClient } from "@/lib/queryClient";
-import type { SocialPage, Media } from "@shared/schema";
+import type { SocialPage, Media, ScheduledPost } from "@shared/schema";
 import { PreviewModal } from "@/components/preview-modal";
 
 function SortableMediaItem({ 
@@ -127,6 +127,10 @@ export default function NewPost() {
     queryKey: ['/api/media'],
   });
 
+  const { data: scheduledPosts = [] } = useQuery<ScheduledPost[]>({
+    queryKey: ['/api/scheduled-posts'],
+  });
+
   const uploadMutation = useMutation({
     mutationFn: async (file: File) => {
       const formData = new FormData();
@@ -707,7 +711,7 @@ export default function NewPost() {
                   <CardDescription>Programmez la publication (optionnel)</CardDescription>
                 </CardHeader>
                 <CardContent>
-                  <div className="space-y-2">
+                  <div className="space-y-3">
                     <Label htmlFor="scheduledDate">Date et heure</Label>
                     <Input
                       id="scheduledDate"
@@ -719,6 +723,80 @@ export default function NewPost() {
                     <p className="text-xs text-muted-foreground">
                       Laissez vide pour publier immédiatement
                     </p>
+                    
+                    {(() => {
+                      // Get dates with scheduled posts
+                      const datesWithPosts = scheduledPosts
+                        .filter(post => post.scheduledAt)
+                        .map(post => {
+                          const date = new Date(post.scheduledAt!);
+                          return date.toISOString().split('T')[0];
+                        })
+                        .filter((date, index, self) => self.indexOf(date) === index)
+                        .sort();
+                      
+                      if (datesWithPosts.length > 0) {
+                        return (
+                          <div className="p-3 bg-red-500/10 rounded-lg border border-red-500/20">
+                            <div className="flex items-center gap-2 mb-2">
+                              <div className="w-2 h-2 rounded-full bg-red-500"></div>
+                              <span className="text-xs font-semibold text-red-600 dark:text-red-400">
+                                Dates avec publications programmées
+                              </span>
+                            </div>
+                            <div className="flex flex-wrap gap-2">
+                              {datesWithPosts.slice(0, 5).map((date) => {
+                                const dateObj = new Date(date + 'T00:00:00');
+                                const formatted = dateObj.toLocaleDateString('fr-FR', { 
+                                  day: '2-digit', 
+                                  month: 'short' 
+                                });
+                                return (
+                                  <span 
+                                    key={date} 
+                                    className="text-xs px-2 py-1 bg-red-500/20 text-red-700 dark:text-red-300 rounded-md font-medium"
+                                  >
+                                    {formatted}
+                                  </span>
+                                );
+                              })}
+                              {datesWithPosts.length > 5 && (
+                                <span className="text-xs px-2 py-1 text-red-600 dark:text-red-400 font-medium">
+                                  +{datesWithPosts.length - 5} autre{datesWithPosts.length - 5 > 1 ? 's' : ''}
+                                </span>
+                              )}
+                            </div>
+                            <p className="text-[10px] text-red-600/80 dark:text-red-400/80 mt-2">
+                              Ces dates ont déjà des publications planifiées
+                            </p>
+                          </div>
+                        );
+                      }
+                      return null;
+                    })()}
+                    
+                    <div className="p-3 bg-green-500/10 rounded-lg border border-green-500/20">
+                      <div className="flex items-center gap-2 mb-2">
+                        <div className="w-2 h-2 rounded-full bg-green-500"></div>
+                        <span className="text-xs font-semibold text-green-600 dark:text-green-400">
+                          Heures optimales pour l'audience
+                        </span>
+                      </div>
+                      <div className="flex flex-wrap gap-2">
+                        <span className="text-xs px-2 py-1 bg-green-500/20 text-green-700 dark:text-green-300 rounded-md font-medium">
+                          8h - 9h
+                        </span>
+                        <span className="text-xs px-2 py-1 bg-green-500/20 text-green-700 dark:text-green-300 rounded-md font-medium">
+                          12h - 14h
+                        </span>
+                        <span className="text-xs px-2 py-1 bg-green-500/20 text-green-700 dark:text-green-300 rounded-md font-medium">
+                          18h - 21h
+                        </span>
+                      </div>
+                      <p className="text-[10px] text-green-600/80 dark:text-green-400/80 mt-2">
+                        Ces créneaux maximisent la portée de vos publications
+                      </p>
+                    </div>
                   </div>
                 </CardContent>
               </Card>
diff --git a/replit.md b/replit.md
index 0062e4e..213f6a1 100644
--- a/replit.md
+++ b/replit.md
@@ -11,6 +11,7 @@ Preferred communication style: Simple, everyday language.
 ## Recent Changes
 
 ### October 28, 2025
+- **Calendar Mobile UX Improvements**: Enhanced mobile calendar and publication planning interface with three visual improvements: (1) Mobile calendar list now displays today's date at the top, before chronological ordering, for quick access to current day's publications; (2) Added green visual indicators in new-post page showing optimal posting times (8h-9h, 12h-14h, 18h-21h) to maximize audience reach; (3) Added red visual indicators showing dates with existing scheduled posts to prevent scheduling conflicts. Both indicators appear dynamically below the datetime selector, displaying up to 5 dates with option to view more.
 - **Facebook Video Story Publishing Fix**: Fixed critical bug preventing video story publication. Facebook Graph API requires a 3-phase upload process for video stories: (1) START phase - initialize upload session and get `video_id` + `upload_url`, (2) UPLOAD phase - POST video to rupload.facebook.com endpoint with `file_url` header and OAuth authorization, (3) FINISH phase - finalize and publish story with `video_id`. Previous implementation incorrectly attempted direct upload to `/video_stories` endpoint with `file_url` parameter, causing "#100 The parameter upload_phase is required" error. Fixed by implementing proper 3-phase workflow using remote URL upload method (file_url header), avoiding need for binary chunked uploads.
 
 ### October 17, 2025