For archive (Updated on February 26, 2019)
1) In Latin,
alumnus means “male student”
almuna means “female student”
alumni means “male students”
alumnae means “female students”.
To save time and space, we use alum for all the four cases.
In modern usage, the term “alumni” applies to both male and female students.
2) According to “Ripley’s Believe it or not”, a graveyard inscription has February 30th.
Grapevine says that two Caesars and/or their took away a day each from February to make July (named after Julius Caesar) and August (named after Augustus Caesar) to have 31 days instead of 30.
February became the shortest month of the calendar year with 28 days. It was given back an extra day on a leap year. The earth takes about 365.2422 days to revolve round the sun, so the discrepancy became 0.9688 day every four years (or 97 days in 4 centuries).
In Gregorian calendar, a leap year is defined as a non-century year that is divisible by 4, and a century year that is divisible by 400.