I have written job code on crontab.xml
<job name="vendor_out_for_delivery_notifiation" instance="Bakeway\VendorNotification\Helper\Data" method="sendPushNotificationForUpcomingOrderCron">
<schedule>0 */21 * * </schedule>
</job>
I have given 9pm of every night but its not working entries is not going in to cron_schedule
table.
I have created custom group of this cron.
<group id="vendor_notification_cron_group">
php bin/magento cron:run --group="vendor_notification_cron_group"
Please reply if you have any solution.