diff --git a/package.json b/package.json
index 7df44c8..f8e276e 100644
--- a/package.json
+++ b/package.json
@@ -90,6 +90,7 @@
       ".module.ts",
       ".request.ts",
       ".presenter.ts",
+      ".exception.ts",
       "main.ts"
     ],
     "rootDir": "src",
diff --git a/src/modules/matcher/domain/entities/time.ts b/src/modules/matcher/domain/entities/time.ts
index 63f8deb..ef4b0bf 100644
--- a/src/modules/matcher/domain/entities/time.ts
+++ b/src/modules/matcher/domain/entities/time.ts
@@ -1,11 +1,9 @@
 import { MatcherException } from '../../exceptions/matcher.exception';
 import { MarginDurations } from './margin-durations.type';
 import { IRequestTime } from '../interfaces/time-request.interface';
-import { TimingDays, TimingFrequency } from './timing';
+import { TimingDays, TimingFrequency, Days } from './timing';
 import { Schedule } from './schedule.type';
 
-const days = ['mon', 'tue', 'wed', 'thu', 'fri', 'sat', 'sun'];
-
 export class Time {
   _timeRequest: IRequestTime;
   _defaultMarginDuration: number;
@@ -84,7 +82,7 @@ export class Time {
     }
     if (
       !Object.keys(this._timeRequest.schedule).some((elem) =>
-        days.includes(elem),
+        Days.includes(elem),
       )
     ) {
       throw new MatcherException(3, 'No valid day in the given schedule');
@@ -140,7 +138,7 @@ export class Time {
     if (this._timeRequest.marginDurations) {
       if (
         !Object.keys(this._timeRequest.marginDurations).some((elem) =>
-          days.includes(elem),
+          Days.includes(elem),
         )
       ) {
         throw new MatcherException(
diff --git a/src/modules/matcher/domain/entities/timing.ts b/src/modules/matcher/domain/entities/timing.ts
index 87196af..567595a 100644
--- a/src/modules/matcher/domain/entities/timing.ts
+++ b/src/modules/matcher/domain/entities/timing.ts
@@ -12,3 +12,5 @@ export enum TimingDays {
   'fri',
   'sat',
 }
+
+export const Days = ['mon', 'tue', 'wed', 'thu', 'fri', 'sat', 'sun'];