Two Digit Time Display

How can you do two digit time display?

For instance, on version 1.3 the plugin comes with a countdown widget. Currently it displays the time in 1 digit form (i.e. - 1 day, 1 hour, 1 minute, 1 second) and I need it to display in 2 digit form - (i.e. - 01 day, 01 hour, 01 minute, 01 second) -

is this possible? and if so, how?