How to Write Out Calendar Date (i.e. Birthday) 10-31-2000 (Month-Day-Year) = October 31st, 2000 in Words in American (US) & British English (UK)

Date 10-31-2000 = October 31st, 2000 in words

Month is said first in American English.

Format: Month day, year.

October the thirty-first, two thousand


* The definite article "the" can be left out.


October thirty-first, two thousand


British English (UK)
31-10-2000 = 31st October, 2000:

Day is said first in British English.

Format: day Month, year.

the thirty-first of October, two thousand


In (US) American English date representation, usually the month comes before the day, then followed by year.
This is called middle endian representation: the middle significant value, the month, comes first. The day is the least significant value and the year is the most significant value in the sequence.


In (UK) British English, as in the most of Europe, usually the day comes before the month, then followed by year.
This is called little endian representation: the least significant value, the day, comes first. The month has middle significance and the year is the most significant.


Big-endian is a term which is related to an order in which the most significant value in the sequence comes first, so, in our case, the year comes first, usually followed by month and then by day.


Notes on Writing Out Numbers and Years:

1: It's correct to hyphenate all compound numbers from 'twenty-one' (21) through 'ninety-nine' (99). The hyphen is the minus sign, as in 'thirty-four' (34).


2: In American English, unlike British English, when writing out years of three or more digits, the word 'and' is not used after 'hundred' or 'thousand'; i.e. 963 is written out as 'nine sixty-three' (American English) and not as 'nine hundred and sixty-three' (British English); 2025 is 'two thousand twenty-five' (American English) and not 'two thousand and twenty-five' (British English).


3. Up to 1999 the years are spoken as hundreds, but for shortening, the words 'hundred and' are omitted: i. e. 1999 = 'nineteen (hundred and) ninety-nine' = 'nineteen ninety-nine'.


4. After the year 2000 the years are spoken as normal numbers, but for shortening, in colloquial language, the years are pronounced in groups of two: i. e. 2000 = 'two thousand'; 2001 = 'two thousand (and) one', but also 'twenty oh one'.


5. Do not use commas when writing out in words numbers above 999; i.e. 1234 is "twelve thirty-four" and not "twelve, thirty-four".


6. Do not use commas when writing in digits years above 999; i.e. it is 1234; 1973, 2021, and not 1,234; 1,973, 2,021.


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Write Out Calendar Dates in Words in American and British English

Entered dates (i.e. Birthdays) are converted / written out by calculator in words in both American English (US) (Middle Endian) & British English (UK) (Little Endian)

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How to write and say the date in both American and British English

1. How to write and say the date in American English

  • Rule of order: Month Day Year;
  • You write using numbers: 07-15-2018 = July 15th, 2018;
  • You write and say: "July (the)* fifteenth, twenty eighteen" OR "July (the)* fifteenth, two thousand eighteen";
  • * The definite article "the" can be left out.

2. How to write and say the date in British English

  • Rule of order: Day Month Year;
  • You write using numbers: 15-07-2018 = 15th July, 2018;
  • You write and say: "the fifteenth of July, twenty eighteen" OR "the fifteenth of July, two thousand and eighteen";

3. It is common to use numbers instead of months

  • 04-05-2018 is April 5th, 2018 according to the American English standard, but it is 4th May, 2018 by the British English.
  • 01-09-2020 is January 9th, 2020 according to the American English standard, but it is 1st September, 2020 by the British English.
  • 07-03-2022 is July 3rd, 2022 according to the American English standard, but it is 7th March, 2022 by the British English.