Probably, when we are making our custom modules in Magento, we need to work with date and/or time fields in our admin forms. We recommend using Zend_Date for this purpose because their flexibility. In this post, you can find different functions based on the use of Zend_Date which have been of great help for us!
Functions to transform dates & times in php.
This group of php functions, will help you to transform date and time fields and therefore show the information as you prefer.
We hope this will help you!