Happy [Insert Occasion] to You!

I am always late or just forget to wish my constituents a happy, safe, joyous, prosperous [insert occasion/holiday, etc.]. I need to do better. So, I am wishing a happy belated, current or future [[insert occasion/holiday, etc.] to all who celebrate the following in April: April Holidays & National Days:

https://nationaltoday.com/april-holidays/#apr-9