You mean when women couldn't vote?
They are quite close in meaning. "Day by day" refers to process and the passage of time, such as the famous dictum of Emile Coué: "Day by day, in every way, I get better and better". Other examples:...
Day-to-day. It's a hyphenated word.
Yes
No it is not. It can be but it changes every year. Last year it was on my birthday and its on the 19th. So it can br but its not every year!Hope this helps.