Schedule_Broadcast: PushAdmin API Access | Documentation - Website 2 APK Builder

//Payload in above request for send_broadcast and extras below:
$payload = Array(
...//Common
'timezone' => "Asia/Kolkata", //Your timezone (Required)
'datetime' => "2018-06-30 08:30:00", //Schedule Time (YYYY-MM-DD HH:MM:SS)(Required)
);