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Rokjesdag is a Dutch term, meaning "skirt day". It is the first sunny day of the year, when women and girls start wearing (short) skirts. A great and beautiful day according to Martin Bril, a Dutch writer and columnist who made the word "rokjesdag" popular in the Netherlands. Thanks to Bril, the word became a household word in the Netherlands.
- "Martin Bril: the Author, his Death and his Cancer | Laika's MedLibLog". Laikaspoetnik.wordpress.com. 2009-05-23. Retrieved 2015-05-15.
- https://web.archive.org/web/20110315140241/http://www.rokjesbarometer.nl/wanneer-is-het-rokjesdag-volgens-martin-bril/. Archived from the original on March 15, 2011. Retrieved June 8, 2011. Missing or empty