Equivalent to %Y-%m-%d (the ISO 8601 dateformat).

For an official guide on how Excel dates are calculated. Apparently,

Date format such as : the C99standard says it should be that exact format (but not all OSescomply).
A Date with Death
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For an official guide on how Excel dates are calculated. Apparently,

Double Date (Fear Street, No. 23)

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  • Hi guys! This site is really informative but I have one question. Given a specific date entered by the user how can I pass that for the date function to format and display?

    Thank you!! I tried to format a date string for myself but date –help didnt show anything about the “+” which is important for formating…. -.- thanks again!

  • Before we could go looking for correlations to deeper stuff, our first task was to decide which questions were even first-date appropriate. I know each person has his own opinion on what's okay to talk about with a stranger. I also know that if I had to wade through hundreds of thousands of user-submitted questions like these verbatim examples:

    hellow…..
    I was thinking for writing code for the date formate comperison
    if any one having any idea abt it plz informe me…….
    i willl apriciate that…

    Property

    Description

    LongDatePattern 

    Defines the format of the date component of the result string.

    ShortTimePattern 

    Defines the format of the time component of the result string.

    DayNames 

    Defines the localized day names that can appear in the result string.

    MonthNames 

    Defines the localized month names that can appear in the result string.

    TimeSeparator 

    Defines the string that separates the hour, minute, and second components of a time.

    AMDesignator 

    Defines the string that indicates times from midnight to before noon in a 12-hour clock.

    PMDesignator

    Defines the string that indicates times from noon to before midnight in a 12-hour clock.

  • Property

    Description

    LongDatePattern 

    Defines the overall format of the result string.

    DayNames 

    Defines the localized day names that can appear in the result string.

    MonthNames 

    Defines the localized month names that can appear in the result string.

    Standard format strings can also be used in parsing operations with the or methods, which require an input string to exactly conform to a particular pattern for the parse operation to succeed. Many standard format strings map to multiple custom format strings, so a date and time value can be represented in a variety of formats and the parse operation will still succeed. You can determine the custom format string or strings that correspond to a standard format string by calling the method. The following example displays the custom format strings that map to the "d" (short date pattern) standard format string.

Let's say that I have a date in R and it's formatted as follows.

Date objects are stored in R as integer values, allowing for dates to be compared and manipulated as you would a numeric vector. Logical comparisons are a simple. When referring to dates, earlier dates are "less than" later dates. Returning to our example above, we can compare the three dates in edates to January 1, 1970. For dates prior to this, the comparison should return TRUE. For later dates, the comparison should return FALSE.