If one felt anachronistic, one could describe today, Bloomsday, as Shatterday, 16th of Bowery. One need only borrow a little from James Joyce and the masterminds of Revolutionary France.
The names of our seven days have their origins in ancient Rome. They were suggested by the seven "planets" known to the Roman astronomers. These were the Moon, Mars, Mercury, Jupiter, Venus, Saturn, and the Sun.
Each of these had a god associated with it, each god in turn having a special area of responsibility - for example, Mars for war, Jupiter for thunderstorms, Venus for affaires de coeur, or lust, whichever way you like to look at it, and so on.
The English names for the seven days were supplied by the ancient Saxons, who substituted their own divinities that they in turn had lifted from Norse mythology for the gods of Rome. In many cases, however, they bear more than a passing resemblance to the original Roman names - being Moon's day, Tiw's day, Woden's day, Thor's day, Frigg's day, Seterne's day and Sun's day. And even where the name is different, you will find the god in question is the Norse equivalent of the Roman one.
And then in 1939 came a despondent James Joyce, who rechristened them all in Finnegans Wake. He called them Moanday, Tearsday, Wailsday, Thumpsday, Fright day and Shatterday.
Now as regards the month, we have to go back to Revolutionary times in France. In 1792 political opinion favoured a radical change in the civil calendar, and after much consultation between lawyers and mathematicians, 12 months of 30 days each, named after various characteristics of the relevant time of year, were chosen.
The first month of the new era, that which used to be October, with due regard for French priorities was called Vintage, or Vendemiaire With that out of the way, the following five were named according to the weather from which the month was most likely to take its character - Brumaire, Frimaire, Nivose, Pluviose and Ventose, or the months of Mist, Frost, Snow, Rain and Wind respectively. Germinal, Floreal, Prairial, Messidor, Thermidor and Fructidor made up the rest.
Amused by these antics of the seemingly eccentric French, a contemporary wit, the Rev Sidney Smith, composed his own satirical mistranslation of the 12 Revolutionary months.
Starting from January, they were: Snowy, Flowy and Blowy; Showery, Flowery and Bowery; Hoppy, Croppy and Droppy; and Breezy, Sneezy and Freezy.
And so June, by Sidney's reckoning, became the month of Bowery - and hence today, Shatterday, 16th of Bowery.