Hiding Date and Time For Posts

Is there a way to HIDE date and time for posts.
For a) all posts (that is easy I think) or
b) just selected posts?

I would love to add a sticky post but not using
the date as it might confuse people if I have a sticky
post for several months there showing an "old" date
before all newer blog posts show...

 

Hello,

Paste this code in Custom CSS
Appearance > Theme Option > Styling Option > Custom CSS

Code:

.content-bar .post .post_meta .posted_on, .feature_blog_content .post .post_date {
display: none;
} 

Thanks & Regards
Nitesh Raghuwanshi

 

I guess it is only possible to hide ALL, and not change this for selected posts?