diff --git a/src/backend/model/jobs/JobManager.ts b/src/backend/model/jobs/JobManager.ts
index 0933e3ac..232295d8 100644
--- a/src/backend/model/jobs/JobManager.ts
+++ b/src/backend/model/jobs/JobManager.ts
@@ -90,6 +90,9 @@ export class JobManager implements IJobManager, IJobListener {
     this.timers = [];
   }
 
+  /**
+   * Schedules all jobs to run
+   */
   public runSchedules(): void {
     this.stopSchedules();
     Logger.info(LOG_TAG, 'Running job schedules');
@@ -100,6 +103,9 @@ export class JobManager implements IJobManager, IJobListener {
     return this.getAvailableJobs().find((t): boolean => t.Name === jobName);
   }
 
+  /**
+   * Schedules a single job to run
+   */
   private runSchedule(schedule: JobScheduleDTO): void {
     const nextDate = JobScheduleDTOUtils.getNextRunningDate(new Date(), schedule);
     if (nextDate && nextDate.getTime() > Date.now()) {
diff --git a/src/common/config/private/PrivateConfig.ts b/src/common/config/private/PrivateConfig.ts
index 98f21dbd..2c445f8c 100644
--- a/src/common/config/private/PrivateConfig.ts
+++ b/src/common/config/private/PrivateConfig.ts
@@ -144,7 +144,7 @@ export class ScheduledJobTrigger implements JobTrigger {
   @ConfigProperty({type: JobTriggerType})
   readonly type = JobTriggerType.scheduled;
 
-  @ConfigProperty()
+  @ConfigProperty({type: 'unsignedInt'})
   time: number;  // data time
 }
 
@@ -152,9 +152,9 @@ export class ScheduledJobTrigger implements JobTrigger {
 export class PeriodicJobTrigger implements JobTrigger {
   @ConfigProperty({type: JobTriggerType})
   readonly type = JobTriggerType.periodic;
-  @ConfigProperty()
+  @ConfigProperty({type: 'unsignedInt', max: 7})
   periodicity: number;  // 0-6: week days 7 every day
-  @ConfigProperty()
+  @ConfigProperty({type: 'unsignedInt', max: 23 * 60 + 59})
   atTime: number; // day time
 }
 
diff --git a/src/common/entities/job/JobScheduleDTO.ts b/src/common/entities/job/JobScheduleDTO.ts
index ce30e0e6..a4c391e6 100644
--- a/src/common/entities/job/JobScheduleDTO.ts
+++ b/src/common/entities/job/JobScheduleDTO.ts
@@ -18,7 +18,7 @@ export interface ScheduledJobTrigger extends JobTrigger {
 export interface PeriodicJobTrigger extends JobTrigger {
   type: JobTriggerType.periodic;
   periodicity: number;  // 0-6: week days 7 every day
-  atTime: number; // day time
+  atTime: number; // day time min value: 0, max: 23*60+59
 }
 
 export interface AfterJobTrigger extends JobTrigger {
@@ -37,26 +37,26 @@ export interface JobScheduleDTO {
 
 export const JobScheduleDTOUtils = {
 
-  getNextDayOfTheWeek: (refDate: Date, dayOfWeek: number) => {
+  getNextDayOfTheWeek: (refDate: Date, dayOfWeek: number): Date => {
     const date = new Date(refDate);
     date.setDate(refDate.getDate() + (dayOfWeek + 1 + 7 - refDate.getDay()) % 7);
     if (date.getDay() === refDate.getDay()) {
       return new Date(refDate);
     }
-    date.setHours(0, 0, 0, 0);
+    date.setUTCHours(0, 0, 0, 0);
     return date;
   },
 
   nextValidDate: (date: Date, h: number, m: number, dayDiff: number): Date => {
-
-    date.setSeconds(0);
-    if (date.getHours() < h || (date.getHours() === h && date.getMinutes() < m)) {
-      date.setHours(h);
-      date.setMinutes(m);
+    date.setUTCSeconds(0);
+    date.setUTCMilliseconds(0);
+    if (date.getUTCHours() < h || (date.getUTCHours() === h && date.getUTCMinutes() < m)) {
+      date.setUTCHours(h);
+      date.setUTCMinutes(m);
     } else {
       date.setTime(date.getTime() + dayDiff);
-      date.setHours(h);
-      date.setMinutes(m);
+      date.setUTCHours(h);
+      date.setUTCMinutes(m);
     }
     return date;
   },
@@ -68,9 +68,8 @@ export const JobScheduleDTOUtils = {
 
       case JobTriggerType.periodic:
 
-
-        const hour = Math.floor(schedule.trigger.atTime / 1000 / (60 * 60));
-        const minute = (schedule.trigger.atTime / 1000 / 60) % 60;
+        const hour = Math.min(23, Math.floor(schedule.trigger.atTime / 60));
+        const minute = schedule.trigger.atTime % 60;
 
         if (schedule.trigger.periodicity <= 6) { // Between Monday and Sunday
           const nextRunDate = JobScheduleDTOUtils.getNextDayOfTheWeek(refDate, schedule.trigger.periodicity);
diff --git a/src/frontend/app/ui/settings/jobs/jobs.settings.component.html b/src/frontend/app/ui/settings/jobs/jobs.settings.component.html
index 977eadaf..a9372961 100644
--- a/src/frontend/app/ui/settings/jobs/jobs.settings.component.html
+++ b/src/frontend/app/ui/settings/jobs/jobs.settings.component.html
@@ -18,15 +18,13 @@
                 <ng-container [ngSwitch]="schedule.trigger.type">
                   <ng-container *ngSwitchCase="JobTriggerType.periodic">
                     <ng-container i18n>every</ng-container>
-                    {{periods[schedule.trigger.periodicity]}} {{schedule.trigger.atTime | date:"HH:mm":"+0"}}
+                    {{periods[schedule.trigger.periodicity]}} {{atTimeLocal(schedule.trigger.atTime) | date:"HH:mm (z)"}}
                   </ng-container>
                   <ng-container
                     *ngSwitchCase="JobTriggerType.scheduled">{{schedule.trigger.time | date:"medium"}}</ng-container>
                   <ng-container *ngSwitchCase="JobTriggerType.never" i18n>never</ng-container>
                   <ng-container *ngSwitchCase="JobTriggerType.after">
-                    <ng-container i18n>after</ng-container>
-                    :
-                    {{schedule.trigger.afterScheduleName}}
+                    <ng-container i18n>after</ng-container>: {{schedule.trigger.afterScheduleName}}
                   </ng-container>
                 </ng-container>
               </div>
diff --git a/src/frontend/app/ui/settings/jobs/jobs.settings.component.ts b/src/frontend/app/ui/settings/jobs/jobs.settings.component.ts
index 1d33e3d7..44acb99e 100644
--- a/src/frontend/app/ui/settings/jobs/jobs.settings.component.ts
+++ b/src/frontend/app/ui/settings/jobs/jobs.settings.component.ts
@@ -7,7 +7,8 @@ import {SettingsComponentDirective} from '../_abstract/abstract.settings.compone
 import {ScheduledJobsService} from '../scheduled-jobs.service';
 import {
   AfterJobTrigger,
-  JobScheduleDTO, JobScheduleDTOUtils,
+  JobScheduleDTO,
+  JobScheduleDTOUtils,
   JobTriggerType,
   NeverJobTrigger,
   PeriodicJobTrigger,
@@ -17,7 +18,7 @@ import {ConfigTemplateEntry} from '../../../../../common/entities/job/JobDTO';
 import {ModalDirective} from 'ngx-bootstrap/modal';
 import {JobProgressDTO, JobProgressStates} from '../../../../../common/entities/job/JobProgressDTO';
 import {BackendtextService} from '../../../model/backendtext.service';
-import {ServerConfig, ServerJobConfig} from '../../../../../common/config/private/PrivateConfig';
+import {ServerJobConfig} from '../../../../../common/config/private/PrivateConfig';
 
 @Component({
   selector: 'app-settings-jobs',
@@ -78,6 +79,14 @@ export class JobsSettingsComponent extends SettingsComponentDirective<ServerJobC
       $localize`day`]; // 7
   }
 
+
+  atTimeLocal(atTime: number): Date {
+    const d = new Date();
+    d.setUTCHours(Math.floor(atTime / 60));
+    d.setUTCMinutes(Math.floor(atTime % 60));
+    return d;
+  }
+
   getConfigTemplate(JobName: string): ConfigTemplateEntry[] {
     const job = this.settingsService.availableJobs.value.find(t => t.Name === JobName);
     if (job && job.ConfigTemplate && job.ConfigTemplate.length > 0) {
@@ -161,7 +170,7 @@ export class JobsSettingsComponent extends SettingsComponentDirective<ServerJobC
   }
 
   public sortedSchedules(): JobScheduleDTO[] {
-    return this.states.scheduled.value.slice().sort((a: JobScheduleDTO, b: JobScheduleDTO) => {
+    return (this.states.scheduled.value as JobScheduleDTO[]).slice().sort((a: JobScheduleDTO, b: JobScheduleDTO) => {
       return this.getNextRunningDate(a, this.states.scheduled.value) - this.getNextRunningDate(b, this.states.scheduled.value);
     });
   }
@@ -174,7 +183,6 @@ export class JobsSettingsComponent extends SettingsComponentDirective<ServerJobC
     this.jobModal.hide();
   }
 
-
   getProgress(schedule: JobScheduleDTO): JobProgressDTO {
     return this.jobsService.getProgress(schedule);
   }
diff --git a/src/frontend/app/ui/utils/timestamp-timepicker/timepicker.component.ts b/src/frontend/app/ui/utils/timestamp-timepicker/timepicker.component.ts
index db4ef787..ab7d10b6 100644
--- a/src/frontend/app/ui/utils/timestamp-timepicker/timepicker.component.ts
+++ b/src/frontend/app/ui/utils/timestamp-timepicker/timepicker.component.ts
@@ -7,29 +7,38 @@ import {Component, EventEmitter, Input, Output} from '@angular/core';
 export class TimeStampTimePickerComponent {
 
   timestampValue = 0;
-  timezoneOffset = (new Date()).getTimezoneOffset() * 60 * 1000;
   @Output() timestampChange = new EventEmitter<number>();
 
   date: Date = new Date();
-
   @Input() name: string;
 
+  constructor() {
+    this.date.setUTCSeconds(0);
+    this.date.setUTCMilliseconds(0);
+  }
+
   @Input()
   public get timestamp(): number {
     return this.timestampValue;
   }
 
   public set timestamp(val: number) {
-    this.date.setTime(val + this.timezoneOffset);
+    const h = Math.min(23, Math.floor(val / 60));
+    const m = val % 60;
+    this.date.setUTCHours(h);
+    this.date.setUTCMinutes(m);
+
     if (this.timestampValue === val) {
       return;
     }
     this.timestampValue = val;
     this.timestampChange.emit(this.timestampValue);
+
   }
 
   onChange(date: Date | string): void {
-    this.timestamp = (new Date(date)).getTime() - this.timezoneOffset;
+    const d = new Date(date);
+    this.timestamp = d.getUTCHours() * 60 + d.getUTCMinutes();
   }