In the US there are three lemon-themed national days each year: National Lemon Meringue Pie Day on August 15, National Lemon Juice Day on August 29, and National Lemon Cream Pie Day on November 29.
Surprisingly there are no national days dedicated to lemonade, despite the proverbial phrase "when life gives you lemons, make lemonade". But all that is forgotten with many of these lemon tattoos making reference to that popular phrase.
When life doesn't give you lemons (to make lemonade with)- get a lemon tattoo instead!
There's more here: 15 Energizing Lemon Tattoos.