Articles approved but not listed

I am the problem. I think it was just that I did not get to them right away. Articles usually go live within a few minutes after I edit them. I always check the front page after I finish a day's worth of articles to ensure I got all of them. I have noticed a few that mysteriously do not appear in the front page list of recent articles eventhough I have edited them. As far as I know, they at least appear in the appropriate permanent sections. Also, I think the last time that happened was January 27.

I am still working on tools to help edit articles. There is something I was trying to figure out yesterday; I did not expect to spend an entire day. I eventually gave up on doing that and that did cause some delay. This morning I worked on doing something else that no one (including Microsoft) has been able to solve but I did not waste so much time on that before giving up.
So far I have managed to get the articles assgned to me done by the end of my day, which might be about noon in India. Is that a problem?

Yes it lists automatically if the publish date is today. I see article publish date is today but don't see on the home page. Wired! I see in them in the section though

http://www.c-sharpcorner.com/1/245/

Sure:
http://www.c-sharpcorner.com/UploadFile/iersoy/build-your-own-iphone-rss-reader-in-15-minutes-with-flash-bu/
http://www.c-sharpcorner.com/UploadFile/iersoy/image-based-text-effect-on-windows-phone-7/

So its live after 12:00 .i thought after approval its listed automatically.