diff --git a/src/memories.rs b/src/memories.rs
index c50439b..2e46328 100644
--- a/src/memories.rs
+++ b/src/memories.rs
@@ -1,9 +1,7 @@
 use actix_web::web::Data;
 use actix_web::{HttpRequest, HttpResponse, Responder, get, web};
 use chrono::LocalResult::{Ambiguous, Single};
-use chrono::{
-    DateTime, Datelike, FixedOffset, Local, LocalResult, NaiveDate, TimeZone, Timelike, Utc,
-};
+use chrono::{DateTime, Datelike, FixedOffset, Local, LocalResult, NaiveDate, TimeZone, Utc};
 use log::{debug, trace, warn};
 use opentelemetry::KeyValue;
 use opentelemetry::trace::{Span, Status, TraceContextExt, Tracer};
@@ -541,7 +539,7 @@ pub async fn list_memories(
     match span_mode {
         // Sort by absolute time for a more 'overview'
         MemoriesSpan::Month => memories_with_dates.sort_by(|a, b| a.1.cmp(&b.1)),
-        // For week span, sort by day of month, then time of day, then year (oldest first)
+        // For week span, sort by day of month, then by full timestamp (oldest first)
         MemoriesSpan::Week => {
             memories_with_dates.sort_by(|a, b| {
                 // First, sort by day of month
@@ -550,45 +548,12 @@ pub async fn list_memories(
                     return day_cmp;
                 }
 
-                // Then sort by time of day
+                // Then sort by full created timestamp (oldest to newest)
                 match (a.0.created, b.0.created) {
-                    (Some(a_time), Some(b_time)) => {
-                        // Convert timestamps to DateTime
-                        let a_dt_utc = DateTime::<Utc>::from_timestamp(a_time, 0).unwrap();
-                        let b_dt_utc = DateTime::<Utc>::from_timestamp(b_time, 0).unwrap();
-
-                        // Extract time of day in the appropriate timezone
-                        let a_time_of_day = if let Some(ref tz) = client_timezone {
-                            let dt = a_dt_utc.with_timezone(tz);
-                            (dt.hour(), dt.minute(), dt.second())
-                        } else {
-                            let dt = a_dt_utc.with_timezone(&Local);
-                            (dt.hour(), dt.minute(), dt.second())
-                        };
-
-                        let b_time_of_day = if let Some(ref tz) = client_timezone {
-                            let dt = b_dt_utc.with_timezone(tz);
-                            (dt.hour(), dt.minute(), dt.second())
-                        } else {
-                            let dt = b_dt_utc.with_timezone(&Local);
-                            (dt.hour(), dt.minute(), dt.second())
-                        };
-
-                        // Compare time of day
-                        let time_cmp = a_time_of_day.cmp(&b_time_of_day);
-                        if time_cmp != std::cmp::Ordering::Equal {
-                            return time_cmp;
-                        }
-
-                        // Finally, sort by year (oldest first)
-                        a.1.year().cmp(&b.1.year())
-                    }
+                    (Some(a_time), Some(b_time)) => a_time.cmp(&b_time),
                     (Some(_), None) => std::cmp::Ordering::Less,
                     (None, Some(_)) => std::cmp::Ordering::Greater,
-                    (None, None) => {
-                        // If no timestamps, just sort by year (oldest first)
-                        a.1.year().cmp(&b.1.year())
-                    }
+                    (None, None) => std::cmp::Ordering::Equal,
                 }
             });
         }
@@ -1017,4 +982,90 @@ mod tests {
         // keep.jpg doesn't match any rule
         assert!(!excluder.is_excluded(&keep));
     }
+
+    #[test]
+    fn test_week_span_sorting_chronological_by_day() {
+        // Test that Week span sorts by:
+        // 1. Day of month (ascending)
+        // 2. Full timestamp oldest to newest (year + time combined)
+
+        // Create test data:
+        // - Jan 15, 2024 at 9:00 AM
+        // - Jan 15, 2020 at 10:00 AM
+        // - Jan 16, 2021 at 8:00 AM
+
+        let jan_15_2024_9am = NaiveDate::from_ymd_opt(2024, 1, 15)
+            .unwrap()
+            .and_hms_opt(9, 0, 0)
+            .unwrap()
+            .and_utc()
+            .timestamp();
+
+        let jan_15_2020_10am = NaiveDate::from_ymd_opt(2020, 1, 15)
+            .unwrap()
+            .and_hms_opt(10, 0, 0)
+            .unwrap()
+            .and_utc()
+            .timestamp();
+
+        let jan_16_2021_8am = NaiveDate::from_ymd_opt(2021, 1, 16)
+            .unwrap()
+            .and_hms_opt(8, 0, 0)
+            .unwrap()
+            .and_utc()
+            .timestamp();
+
+        let mut memories_with_dates = vec![
+            (
+                MemoryItem {
+                    path: "photo1.jpg".to_string(),
+                    created: Some(jan_15_2024_9am),
+                    modified: Some(jan_15_2024_9am),
+                },
+                NaiveDate::from_ymd_opt(2024, 1, 15).unwrap(),
+            ),
+            (
+                MemoryItem {
+                    path: "photo2.jpg".to_string(),
+                    created: Some(jan_15_2020_10am),
+                    modified: Some(jan_15_2020_10am),
+                },
+                NaiveDate::from_ymd_opt(2020, 1, 15).unwrap(),
+            ),
+            (
+                MemoryItem {
+                    path: "photo3.jpg".to_string(),
+                    created: Some(jan_16_2021_8am),
+                    modified: Some(jan_16_2021_8am),
+                },
+                NaiveDate::from_ymd_opt(2021, 1, 16).unwrap(),
+            ),
+        ];
+
+        // Sort using Week span logic
+        memories_with_dates.sort_by(|a, b| {
+            // First, sort by day of month
+            let day_cmp = a.1.day().cmp(&b.1.day());
+            if day_cmp != std::cmp::Ordering::Equal {
+                return day_cmp;
+            }
+
+            // Then sort by full created timestamp (oldest to newest)
+            match (a.0.created, b.0.created) {
+                (Some(a_time), Some(b_time)) => a_time.cmp(&b_time),
+                (Some(_), None) => std::cmp::Ordering::Less,
+                (None, Some(_)) => std::cmp::Ordering::Greater,
+                (None, None) => std::cmp::Ordering::Equal,
+            }
+        });
+
+        // Expected order:
+        // 1. Jan 15, 2020 at 10:00 AM (oldest Jan 15 photo)
+        // 2. Jan 15, 2024 at 9:00 AM (newer Jan 15 photo)
+        // 3. Jan 16, 2021 at 8:00 AM (all Jan 16 photos after Jan 15)
+
+        assert_eq!(memories_with_dates[0].0.created.unwrap(), jan_15_2020_10am);
+        assert_eq!(memories_with_dates[1].0.created.unwrap(), jan_15_2024_9am);
+        assert_eq!(memories_with_dates[2].0.created.unwrap(), jan_16_2021_8am);
+    }
 }