post not added to Wp_Cron

Hi,

The post I want to be mailed is not getting added under the wp_Cron if I publish by following the below steps.

1. Create a post with title and then draft it.
2. Then select the category of my post and then start editing the post.
3.After 5 min publish it.

After this I should see it that its is added to cron but that’s not happening.

Can someone help me by saying which hooks I need to check.

Thanks in Advance!