diff --git a/source/widgets/weekview/logic.ts b/source/widgets/weekview/logic.ts
index f9660cf..a717941 100644
--- a/source/widgets/weekview/logic.ts
+++ b/source/widgets/weekview/logic.ts
@@ -591,8 +591,8 @@ namespace _dali.widgets
 			{
 				type type_row_data = Array<
 					{
-						week : int;
-						day_pits : Array<lib_plankton.pit.type_pit>;
+						head : int;
+						pits : Array<lib_plankton.pit.type_pit>;
 					}
 				>;
 				
@@ -612,14 +612,23 @@ namespace _dali.widgets
 					lib_plankton.translate.get("common.weekday.saturday"),
 					lib_plankton.translate.get("common.weekday.sunday"),
 				];
-				const row_data_original : type_row_data = (
+				const row_data_horizontal : type_row_data = (
 					lib_plankton.list.sequence(this.count)
 					.map(
 						offset => {
 							const week : int = (this.week + offset);
+							const week_adjusted : int = lib_plankton.call.convey(
+								this.week,
+								[
+									x => lib_plankton.pit.from_ywd({"year": this.year, "week": x, "day": 2}),
+									x => lib_plankton.pit.shift_week(x, offset),
+									lib_plankton.pit.to_ywd,
+									x => x.week
+								]
+							);
 							return {
-								"week": week,
-								"day_pits": (
+								"head": week_adjusted,
+								"pits": (
 									lib_plankton.list.sequence(7)
 									.map(
 										day => lib_plankton.pit.from_ywd(
@@ -638,13 +647,13 @@ namespace _dali.widgets
 						}
 					)
 				);
-				const row_data_alternative : type_row_data = (
+				const row_data_vertical : type_row_data = (
 					lib_plankton.list.sequence(7)
 					.map(
 						day_of_week => {
 							return {
-								/*"day_of_week"*/"week": day_of_week,
-								/*"week_pits"*/"day_pits": (
+								"head": day_of_week,
+								"pits": (
 									lib_plankton.list.sequence(this.count)
 									.map(
 										offset => {
@@ -669,9 +678,9 @@ namespace _dali.widgets
 				const row_data : type_row_data = (
 					(! this.vertical)
 					?
-					row_data_original
+					row_data_horizontal
 					:
-					row_data_alternative
+					row_data_vertical
 				);
 				// head
 				{
@@ -713,7 +722,6 @@ namespace _dali.widgets
 										const dom_th = document.createElement("th");
 										dom_th.classList.add("weekview-cell");
 										dom_th.classList.add("weekview-cell-day");
-										// const week : int = (this.week + offset);
 										const week : int = lib_plankton.call.convey(
 											this.week,
 											[
@@ -722,7 +730,7 @@ namespace _dali.widgets
 												lib_plankton.pit.to_ywd,
 												x => x.week
 											]
-										)
+										);
 										dom_th.textContent = week.toFixed(0).padStart(2, "0");
 										dom_tr.appendChild(dom_th);
 									}
@@ -746,13 +754,13 @@ namespace _dali.widgets
 										"week": (
 											(! this.vertical)
 											?
-											row.week.toFixed(0).padStart(2, "0")
+											row.head.toFixed(0).padStart(2, "0")
 											:
 											day_names[index]
 										),
 										"cells": (
 											await _dali.helpers.promise_row<string>(
-												row.day_pits
+												row.pits
 												.map(
 													(day_pit) => async () => {
 														const is_today : boolean = lib_plankton.pit.is_between(