"date" 與 "day" 有什麼分別？

英語中
date = 日期...要寫時年月日
day = 一星期中的那一日...Monday=星期一,...Sunday=星期日, etc.

另外day亦是指某一個節日或假期日子或"紀念日"，

老婆問老公：What day is today?就不是答今天是"星期幾"而可能"今天是結婚週年紀念日"或"她的生日"。


BTW
Date亦是"約會"。

What day do you want to have a date?
今個星期你想那天出來約會？

意義含蓋月日為date，意義不含年月日的一天為day，可意為白天或一(整)天
What’s the date(月日/日期) of next meeting?
下次會議的日期是幾月幾號?
What’s today’s date(月日/日期)?
今天是幾月幾號?
We agreed to meet again at a later date(月日/日期).
我們定好在晚些時候的日期再會面
He has been working all day(天).
他已經工作一整天(意為一整個白天)了
The following day(天), a letter arrived.
接下來的一天， 收到了一封信。
We spent three days(天) in Paris.
我們在巴黎度過了三天。

Date:-
about a pareticular day, month, and year.
The date on the letter was 20th July 2018.
Please write your name, address, and date of birth on the form.
A date for the next office meeting.
Set a date:-Have you set a date for the bang-bang ?
At a later date:-We'll deal with this problem at a later date.
To date:-To date there has been no improvement in his health condition.He's dying.
go out on a date:-We're going out on a date Saturday Night !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!someone that you have a date with= Can I bring my "date" to the dancing party ?
Let's make a date to go and see the president one day next week.
Day:-
He has been working all day.
His day begins at nine.
It's been a very long day-D-day.
I've been studying all day. I'm tired !!!!!!!!!!
The day will come when I lose my eyesight on e-games completely.
I might find the time to clean the house one of these days.
I just saw her the day before yesterday.
We spent three days in Kaohuang
We're leaving for HK the day after tomorrow.
What day is it today ?

date means the numerical representation of that particular day in terms of calendar;
day means the "day" in general