planifibot/app/Models/Dia.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class Dia extends Model
{
    use HasFactory;

    public function evento() {
        return $this->belongsTo(Evento::class);
    }

    public function horaFlags() {
        return $this->hasMany(HoraFlag::class);
    }
}