diff --git a/README.md b/README.md
index b54a558..cba1e8b 100644
--- a/README.md
+++ b/README.md
@@ -51,13 +51,14 @@ factors connected to it.
 
 ## Waves
 
-* Wave 1: Sep 2024 
-* Wave 2: Nov 2024 
-* Wave 3: Jan 2025 
-* Wave 4: Mar 2025 
-* Wave 5: May 2025 
-* Wave 6: Jul 2025 
+The waves were collectec over the following dates:
 
+* Wave 1: 2024-09-03
+* Wave 2: 2024-11-06 - 2024-11-21
+* Wave 3: 2025-01-08 - 2025-01-22
+* Wave 4: 2025-03-05 - 2025-03-19
+* Wave 5: 2025-05-07 - 2025-05-20
+* Wave 6: 2025-07-02 - 2026-07-18
 
 ## Folder structure and files