In an earlier life, I taught and studied international women's health. March 8 was always a day that we attended to in class. It has never received a lot of attention in the US but I did find a few web pages that you might want to look at. I know this isn't particularly language related so I hope you'll bear with me and enjoy these links.
The mimosa is the symbol of the celebrations of Women's day in Italy and Russia
Reuters has a someone confusing set of three pages of photos of women. The photos are wonderful but somewhat slow to load, particularly Page 1. For that page, I suggest you select View all Images and then go do something else for a little while. All of the photos will appear on one web page.
Here's one of my favorite photos to the right. There's a little duplication on the three pages but not much. The slide shows do move a little too fast.