And now for a little magic. Drag a guideline through the center of the elements, then drag two guidelines about 1/8" from the center on either side as shown. Select all the elements, then select the Mould Tool (shown in the inset) and select the Default Envelope (the first rectangle on the Infobar). Four control nodes will appear on each corner of the envelope. Drag the bottom left node towards the center to the left guideline. Drag the right node to the right guideline. Holding down the Ctrl key will constrain the movement horizontally.
Notice that the date looks scrabbled and extends beyond the hourglass shape. To remedy this, drag the left red control handle to the left guideline. Drag the right red control handle to the right guideline as shown in the illustration on the bottom. Now that looks a lot better! And notice how elegantly the highlight and the green sides of the glass taper towards the center.