As you can see in the docs :
There is currently no single size for all; select the correct language / spelling for the name of the month or day, week name, depending on the language or locale.
and
, , , , . , .
//app.module.ts
@NgModule({
...,
imports: [
IonicModule.forRoot(MyApp, {
monthNames: ['janeiro', 'fevereiro', 'mar\u00e7o', ... ],
monthShortNames: ['jan', 'fev', 'mar', ... ],
dayNames: ['domingo', 'segunda-feira', 'ter\u00e7a-feira', ... ],
dayShortNames: ['dom', 'seg', 'ter', ... ],
})
],
...
})
<ion-item>
<ion-label>Período</ion-label>
<ion-datetime displayFormat="DDDD MMM D, YYYY" [(ngModel)]="myDate"
monthNames="janeiro, fevereiro, mar\u00e7o, ..."
monthShortNames="jan, fev, mar, ..."
dayNames="domingo, segunda-feira, ter\u00e7a-feira, ..."
dayShortNames="dom, seg, ter, ..."></ion-datetime>
</ion-item>
:
<ion-datetime cancelText="'CustomCancel'" doneText="'CustomDone'" ...></ion-datetime>