Some HP inkjet printers use cartridges that expire 12 or 24 months after their warranty ends, or 18 or 30 months after being installed in your printer. Some of these printers will refuse to print until you've replace an expired cartridge.
Legend of the shamrock. St Patrick. The Irish shamrock symbol is closely associated with St Patrick, the patron saint of Ireland. St Patrick is believed to have been from Scotland or Wales. Irish raiders captured and enslaved him at the end of 4th Century. He spent six years in slavery, probably in the West of Ireland.
The Celtic Cross meaning as a Gaelic symbol is worth exploring. There are hundreds of examples still in existence. Sometimes known as a Celtic sun cross, there are also thousands of memorials in the form of a Celtic cross headstone to be seen in many cemeteries around the world. more Christian theory is that the ring is a halo and that the cross represents Jesus Christ. It is also thought that the Christian monks combined the sun-god idea with the christian cross to broaden the appeal to Irish pagans.