lengths – then it means: ‘ – feet, ” – inches like: He is 5’4” tall. The would mean : He is 5 feet and 4 inches tall. (about 165 cm)

The ditto mark is a sign indicating that the words or figures above it are to be repeated. The mark is made using ‘a pair of apostrophes’; ‘a pair of marks ” used underneath a word’; the symbol ” (quotation mark); or the symbol ” (right double quotation mark).

An exclamation mark after a number is meaning Factorials. Lets say you have 3! To find 3 factorial, you would do 1x2x3, which is 6.

Apostrophes are generally used in contractions and to indicate the possessive case, but they are not used to form plurals of numbers and abbreviations in APA Style. Just as with numbers, don’t include an apostrophe when pluralizing abbreviations.

Rule to Remember Numbers can be shortened by adding an apostrophe in place of the omitted number. An apostrophe and s are also used to form the plural of letters, numbers, signs, and words referring to words.

In sum, when it comes to making numbers plural, you can treat them like regular words: just add an “-s” to the last digit. However, when you need to make a number possessive, add an apostrophe before the “s.”

When to Use an Apostrophe: Years Similar to making contractions, an apostrophe should be used with years when omitting numbers. If you’re talking about the 1950s, you could drop the first two numbers and leave it as the ’50s.

According to this source the correct symbol to abbreviate year using two digits is an apostrophe: When abbreviating a year, remove the first two numbers and indicate the omission by using an apostrophe: 2009 becomes ’09 (not ’09) 2010 becomes ’10 (not ’10)

The apostrophe will always be placed either before or after an s at the end of the noun owner. Always the noun owner will be followed (usually immediately) by the thing it owns.

“It’s” with an apostrophe means “it is” or “it has.” sometimes used before s to show the plural of a number or a letter: There are two p’s in “supper.”

Do Not Abbreviate The Year 2020 As “20” When Writing The Date: Use “January 3, 2020,” Not “1/3/20” While many of us normally abbreviate years – for example, by writing 2019 as “19” – doing so in 2020 can be dangerous.

By writing out the date as 01/01/20 (January 1, 2020), the date can be fraudulently changed to 2019, 2021, or any other date in this century. But abbreviating 2020 to 20 means that a criminal could write two numbers after the 20 to imply that the document was dated before or after it actually was.

The basic idea here is that you write down a date, like January 1st, 2020. If you abbreviated it to 1/1/20, it’s possible that someone could add two more numbers to the end to change the year.

Authorities are warning that anyone abbreviating the year as “20” when dating documents could put themselves at risk of fraud. They recommend writing out the date in full on legal documents and checks to avoid this.

In formal writing, always write the date in full when it is part of a sentence. This usually involves giving the day of the month, the month, and the year: The meeting will take place on April 21, 2019. Note that the year follows after a comma.

In traditional American usage, dates are written in the month–day–year order (e.g. June 4, 2021) with a comma before and after the year if it is not at the end of a sentence, and time in 12-hour notation (8:21 pm).

You have several options. A timestamp in Zulu format would look like TZ. That is a date “YYYY-MM-DD” with the four-digit Year, two-digit month and two-digit day, “T” for “time,” followed by a time formatted as “HH:MM:SS” with hours, minutes and seconds, all followed with a “Z” to denote that it is Zulu format.

UTC use to be called Greenwich Mean Time (GMT), but still is in English speaking countries, or Zulu Time (Z), which is used in plane and ship navigation. UTC is the time at the Prime Meridian (0° Longitude) given in hours and minutes on a 24 hour clock.

Universal Coordinated Time

Time zones were identified by successive letters of the alphabet and the Greenwich time zone was marked by a Z as it was the point of origin. Since the NATO phonetic alphabet word for Z is “Zulu”, UTC is sometimes known as “Zulu time”.