Different with the actual data

[sciefylab]

Why its Different from the actual data? how to fix it?
the screen like bellow:

{#if item.PreparedAt} 
    Show: <Time relative={false} timestamp="{item.PreparedAt}" format="YYYY-MM-DDTHH:mm:ssZ[Z]" />
   Actual: {item.PreparedAt}
 {/if}