diff --git a/course_schedule.qmd b/course_schedule.qmd
index cb686ee..c8ab21e 100644
--- a/course_schedule.qmd
+++ b/course_schedule.qmd
@@ -10,7 +10,7 @@ title: "Course schedule"
 
 | block   	| start    	| end      	| subject                        	|
 |---------	|----------	|----------	|--------------------------------	|
-| introduction 	| 9:15 AM  	| 9:30 AM 	| [Introduction](day1/day1-1_setup.qmd) |
+| introduction 	| 9:00 AM  	| 9:30 AM 	| [Introduction](day1/day1-1_setup.qmd) |
 | block 1 	| 9:30 AM  	| 10:30 AM 	| [Introduction scRNAseq](day1/day1-1_setup.qmd) |
 |         	| 10:30 AM 	| 11:00 AM 	| BREAK                          	|
 | block 2 	| 11:00 AM 	| 12:30 PM 	| [Analysis tools and QC](day1/day1-2_analysis_tools_qc.qmd) 	     |
@@ -23,7 +23,7 @@ title: "Course schedule"
 
 | block   	| start    	| end      	| subject                             	|
 |---------	|----------	|----------	|-------------------------------------	|
-| block 1 	| 9:15 AM  	| 10:30 AM 	| [Integration](day2/day2-2_integration.qmd) and [Dimensionality reduction](day2/day2-1_dimensionality_reduction.qmd)	|
+| block 1 	| 9:00 AM  	| 10:30 AM 	| [Integration](day2/day2-2_integration.qmd) and [Dimensionality reduction](day2/day2-1_dimensionality_reduction.qmd)	|
 |         	| 10:30 AM 	| 11:00 AM 	| BREAK                               	|
 | block 2 	| 11:00 AM 	| 12:30 PM 	| Further exercises  |
 |         	| 12:30 PM 	| 1:30 PM  	| BREAK                               	|
@@ -35,7 +35,7 @@ title: "Course schedule"
 
 | block   	| start    	| end      	| subject                             	|
 |---------	|----------	|----------	|-------------------------------------	|
-| block 1 	| 9:15 AM  	| 10:30 AM 	| [Differential gene expression](day3/day3-1_differential_gene_expression.qmd)	|
+| block 1 	| 9:00 AM  	| 10:30 AM 	| [Differential gene expression](day3/day3-1_differential_gene_expression.qmd)	|
 |         	| 10:30 AM 	| 11:00 AM 	| BREAK                               	|
 | block 2 	| 11:00 AM 	| 12:30 PM 	| [Enrichment analysis](day3/day3-2_enrichment_analysis.qmd)            	|
 |         	| 12:30 PM 	| 1:30 PM  	| BREAK                               	|