The Reposition Viewports tool within the Adjusters group from the Project Process tool-set can help reposition viewports on different sheets so that their left bottom position, for example, will all be around a similar spot.
After the ribbon button is clicked, the tool asks to pick some sheets.
If the OK (with a green good mark) button is pressed, the tool will reposition viewports on these sheets accordingly. The alignment base can be set in the Settings dialog, LeftBottom as in this case.
If all those sheets and their viewports look as the first screenshot demonstrates below, they will look very nice as second after the operation.