How to centre date above title

I use this on both my blogs as it is so easy. Their is no need to edit your 'HTML' codes, which if you don't know how to use can destroy your template so easy. Instead you just add the code to the CSS section.

To get to the CSS section go to Template.  Click on 'customise'. Scroll down to 'Custom CSS'.

Paste this code in - 

.post-title {
text-align:center;
}
.date-header {
text-align:center;
}

(My example)
the example shows the code in the box and also it is showing the date in now centred.
Click on 'Apply to blog' then your done.