I am a Unique object

I come in many, beautiful designs
I represent the Past,Present,and Future
     What am I?

I am worldwide
                                 Without me,people wouldn’t know what day it is

I was made to show the importance of how valuable life can be

                                  When you look at me,all you see are numbers, the hour and minute hand

But I am so much more than that,you just have to look closer

                                 I teach you that life is too short to hold grudges, no matter what

Because you never know when it will be too late to fix your mistakes

                                Years and years from now, when my hour hand strikes twelve, your life depends on me