Also, for 2022 when many buildings around the world would usually have green lighting to celebrate the world's most famous patron saint, this year many of those buildings will be getting the blue and yellow of Ukraine's national flag.
It's a fitting gesture, especially since blue and yellow combine to make green.
Who knows what the weather will bring for this week's celebrations - it is often raining on Saint Patrick's Day in Ireland but it can be warm.
The record high for March in Ireland is 23.6C and the lowest temperature on record is -17.2C so it is likely to be somewhere in between those.
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