Twosday

Two
 
The word two has its origins in PIE duwo, dwo (two) and Proto-Germanic twa, the source of Old Saxon twene, twa, Old Norse tveir, Dutch twee, Old High German zwo, German zwei.
 
PIE dwo and Proto-Germanic twa are the source of Old English twa which later became the word two. The word two has hardly changed in thousands of years. Old English twa is related to the word twegen (two) which, in 1799, became the word twain, a nautical term meaning two fathoms depth.
 
PIE dwo is the source of many words, including between, binary, biscuit, combine, dichotomy, diode, diploma, diplomat, double, doubt, dual, dubious, duplicate, twenty, twice, twig, twilight, twin, and twine.
 
Day
 
The word day has its origins in the PIE root agh (a day) and Proto-Germanic dages (day), the source of Old Saxon dag, Old High German tag, Old Norse dagr, and Old English daeg (the period during which the sun is above the horizon). Old English daeg also meant a lifetime, a definite time of existence.
 
In the later Anglo-Saxon period of English history, the word day had come to mean a 24-hour day which began at sunset.
 
The terms ‘day-by-day’ and ‘all day’ are from the late 14th century. The term ‘one of these days’ is from the 15th century.
 
The term ‘all in day’s work’ (i.e., the unusual taken as routine) is from 1820; a ‘day off’ (i.e., a day way from work) is from 1883; “call it a day” is from 1919; “it’s been one of those days” (i.e., a day of misfortune) is from 1936; and “that will be the day” is from 1941.
 
I can hardly wait until 22 2 2222! I hope it’s a Tuesday.
 
Reference: Online Etymological Dictionary, https://www.etymonline.com/
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