define(App\Project::class, function (Faker $faker) { $start_date = $faker->dateTimeBetween('2014-01-01'); return [ 'name' => 'Project ' . $faker->word() . ' ' . $start_date->format('Y'), 'start_date' => $start_date, 'end_date' => $faker->dateTimeInInterval($start_date, '+ 26 weeks') ]; });