"As a bonus, today is also a global strobogrammatic day when viewed on a seven-segment display, i.e., for all three date formats, today's date when shown, witho

"As a bonus, today is also a global strobogrammatic day when viewed on a seven-segment display, i.e., for all three date formats, today's date when shown, without the delimiters, on a seven-segment display appears the same when rotated by 180°."