Saturday is the day of the green party ... although there is no political ingredient involved here.
For this is the day when many people, whether they have any linkage to Ireland or not, are effectively encouraged to become Irish.
Over the past fortnight many gift and novelty stores have done what they have traditionally done for other public-consumption occasions like Christmas, Halloween and Easter.
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There are green bowler hats, top hats and even cowboy hats ... all adorned with a shamrock of course.