Strange Date format in mat-datepicker

Question

Im having 2/1/2025 in this mat-datepicker but it shows the number as a fraction.

Im trying to see the date in the correct format.

Example

` <mat-form-field appearance="outline" color="accent" class="w-100"> 
 <input matInput 
 [matDatepicker]="picker" 
 formControlName="fechaNacimiento" >
 <mat-datepicker-toggle matSuffix [for]="picker"></mat-datepicker-toggle>
 <mat-datepicker #picker></mat-datepicker>
 <mat-error>El campo es obligatorio</mat-error>
 </mat-form-field>`

it seems to be something related to styles

Answer 1

this can occur because under the hood Angular's mat-datepicker uses an input field and some browser might be extra smart and consider 2/1/2025 to be a mathematical expression (fraction).

ensure to set the MatDateFormats properly:

import { NgModule } from '@angular/core';
import { MatDateFormats, MAT_DATE_FORMATS, MAT_DATE_LOCALE } from '@angular/material/core';
import { DateAdapter, MAT_DATE_LOCALE_PROVIDER } from '@angular/material/core';
import { NativeDateAdapter } from '@angular/material/core';
export const CUSTOM_DATE_FORMATS: MatDateFormats = {
 parse: {
 dateInput: 'MM/dd/yyyy',
 },
 display: {
 dateInput: 'MM/dd/yyyy',
 monthYearLabel: 'MMM yyyy',
 dateA11yLabel: 'LL',
 monthYearA11yLabel: 'MMMM yyyy',
 }
};
@NgModule({
 providers: [
 { provide: MAT_DATE_FORMATS, useValue: CUSTOM_DATE_FORMATS },
 { provide: MAT_DATE_LOCALE, useValue: 'en-US' }, // Ensure locale is correct
 ]
})