fix: set field before using

src/pages/schedule/schedule.component.ts

@@ -45,13 +45,13 @@ export class ScheduleComponent {
   @ViewChild('tableHeader') childComponent!: TableHeaderComponent;
 
   constructor(api: ScheduleService) {
-    this.calculateCurrentWeek();
     this.startTerm = new Date(1, 1, 1);
     api.pairPeriod().subscribe(date => {
       this.pairPeriods = date;
     });
     api.startTerm().subscribe(date => {
       this.startTerm = date.date;
+      this.calculateCurrentWeek();
     });
   }