diff --git a/ISSUE_TEMPLATE.md b/ISSUE_TEMPLATE.md
index 919ae2a..b032685 100644
--- a/ISSUE_TEMPLATE.md
+++ b/ISSUE_TEMPLATE.md
@@ -43,19 +43,21 @@
 
 ## 📊 Diagnostic Findings
 
+**NOTE: All diagnostic steps and actions MUST include full timestamps (YYYY-MM-DD HH:MM) for tracking progress across multiple days.**
+
 ### Initial Inspection Results
-- [x] [Inspection item 1 - e.g., Fluid level low]
-- [x] [Inspection item 2 - e.g., No visible leaks]
-- [ ] [Inspection item 3 - e.g., Check pressure]
-- [ ] [Inspection item 4 - e.g., Test electrical]
+- [x] [Inspection item 1 - e.g., Fluid level low] **[@YYYY-MM-DD HH:MM]**
+- [x] [Inspection item 2 - e.g., No visible leaks] **[@YYYY-MM-DD HH:MM]**
+- [ ] [Inspection item 3 - e.g., Check pressure] **[@YYYY-MM-DD HH:MM]**
+- [ ] [Inspection item 4 - e.g., Test electrical] **[@YYYY-MM-DD HH:MM]**
 
 ### Test Results
 
-| Test | Expected | Actual | Status |
-|------|----------|--------|--------|
-| [Test 1] | [Expected value] | [Actual reading] | ✅/❌/⚠️ |
-| [Test 2] | [Expected value] | [Actual reading] | ✅/❌/⚠️ |
-| [Test 3] | [Expected value] | [Actual reading] | ✅/❌/⚠️ |
+| Test | Expected | Actual | Status | Tested At (YYYY-MM-DD HH:MM) |
+|------|----------|--------|--------|------------------------------|
+| [Test 1] | [Expected value] | [Actual reading] | ✅/❌/⚠️ | [YYYY-MM-DD HH:MM] |
+| [Test 2] | [Expected value] | [Actual reading] | ✅/❌/⚠️ | [YYYY-MM-DD HH:MM] |
+| [Test 3] | [Expected value] | [Actual reading] | ✅/❌/⚠️ | [YYYY-MM-DD HH:MM] |
 
 ### Diagnostic Data Collected
 - **[Test 1]:** [Results and conclusions]
@@ -216,9 +218,20 @@
 
 ## 📅 Session Log
 
-- **[YYYY-MM-DD]:** [Event description - e.g., "Project initiated, diagnosis started"]
-- **[YYYY-MM-DD]:** [Event description - e.g., "Root cause identified, parts ordered"]
-- **[YYYY-MM-DD]:** [Event description - e.g., "Repair completed, van running fine"]
+**IMPORTANT: All entries MUST include full timestamps (YYYY-MM-DD HH:MM) to track issue progress across multiple days.**
+
+- **[YYYY-MM-DD HH:MM]:** [Event description - e.g., "Project initiated, diagnosis started"]
+- **[YYYY-MM-DD HH:MM]:** [Event description - e.g., "Diagnostic tests completed, root cause identified"]
+- **[YYYY-MM-DD HH:MM]:** [Event description - e.g., "Parts ordered, awaiting delivery"]
+- **[YYYY-MM-DD HH:MM]:** [Event description - e.g., "Repair completed, van running fine"]
+
+**Session Log Guidelines:**
+- Use full timestamp format: YYYY-MM-DD HH:MM (24-hour format)
+- Include timestamp for EVERY action, test, and decision
+- Track when parts were ordered, received, and installed (may span multiple days)
+- Note when tests were performed and results observed
+- Record when vehicle was test-driven and any issues found
+- This enables accurate troubleshooting timeline and pattern recognition across multiple days
 
 ---