Print date and timestamp in views-view-field--blog--block-1--image.html.twig
I am assuming that the template is for a date field and you want to display the date field in the format that you specified above. 

Here is the article that might help http://twig.sensiolabs.org/doc/filters/date.html

For PHP date formats you may refer to http://php.net/manual/en/datetime.formats.date.php

Similar question : https://stackoverflow.com/questions/8318914/how-to-render-a-datetime-object-in-a-twig-template