'Reiwa': Japan announces dawn of a new era
https://edition-m.cnn.com/2019/03/31/asia/japan-new-era-reiwa-intl/index.html
Just before announcement of the new era, some people(including me) thought overseas won't be interested in Japan's new era. But, after the announcement, many countries took it up on news.
I couldn't expect the news would go viral.