Gmt Date And Time Now

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Gmt Date Calendar

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The National Institute of Standards and Technology - Time and Frequency Division maintains the standard for frequency and time interval for the United States, provides official time to the United States, and carries out a broad program of research and service activities in time and frequency metrology.

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The Time class represents dates and times in Ruby. It is a thin layer over the system date and time functionality provided by the operating system. This class may be unable on your system to represent dates before 1970 or after 2038.

This chapter makes you familiar with all the most wanted concepts of date and time.

Getting Current Date and Time

Following is the simple example to get current date and time −

This will produce the following result −

Getting Components of a Date & Time

We can use Time object to get various components of date and time. Following is the example showing the same −

This will produce the following result −

Time.utc, Time.gm and Time.local Functions

These two functions can be used to format date in a standard format as follows −

Following is the example to get all the components in an array in the following format − Sts ide.

Gmt Date And Time Now

Try the following −

This will generate the following result −

This array could be passed to Time.utc or Time.local functions to get different format of dates as follows −

This will generate the following result −

Following is the way to get time represented internally as seconds since the (platform-dependent) epoch −

Timezones and Daylight Savings Time

You can use a Time object to get all the information related to Timezones and daylight savings as follows −

Formatting Times and Dates

Gmt Date And Time Now

There are various ways to format date and time. Here is one example showing a few −

This will produce the following result −

Gmt Date And Time Now

Time Formatting Directives

These directives in the following table are used with the method Time.strftime.

Gmt date and time now united states
Sr.No.Directive & Description
1

%a

The abbreviated weekday name (Sun).

2

%A

The full weekday name (Sunday).

3

%b

The abbreviated month name (Jan).

4

%B

The full month name (January).

5

%c

The preferred local date and time representation.

6

%d

Day of the month (01 to 31).

7

%H

Hour of the day, 24-hour clock (00 to 23).

8

%I

Hour of the day, 12-hour clock (01 to 12).

9

%j

Day of the year (001 to 366).

10

%m

Month of the year (01 to 12).

11

%M

Minute of the hour (00 to 59).

12

%p

Meridian indicator (AM or PM).

13

%S

Second of the minute (00 to 60).

14

%U

Week number of the current year, starting with the first Sunday as the first day of the first week (00 to 53).

15

%W

Week number of the current year, starting with the first Monday as the first day of the first week (00 to 53).

16

%w

Day of the week (Sunday is 0, 0 to 6).

17

%x

Preferred representation for the date alone, no time.

18

%X

Preferred representation for the time alone, no date.

19

%y

Year without a century (00 to 99).

20

%Y

Year with century.

21

%Z

Time zone name.

22

%%

Literal % character.

Time Arithmetic

You can perform simple arithmetic with time as follows −

This will produce the following result −

The static Date.now() method returns the number of milliseconds elapsed since January 1, 1970 00:00:00 UTC.

Syntax

Return value

A Number representing the milliseconds elapsed since the UNIX epoch.

Polyfill

This method was standardized in ECMA-262 5th edition. Engines which have not been updated to support this method can work around the absence of this method using the following shim:

Examples

Reduced time precision

To offer protection against timing attacks and fingerprinting, the precision of Date.now() might get rounded depending on browser settings.
In Firefox, the privacy.reduceTimerPrecision preference is enabled by default and defaults to 20µs in Firefox 59; in 60 it will be 2ms.

Gmt Date And Time Now United States

In Firefox, you can also enable privacy.resistFingerprinting, the precision will be 100ms or the value of privacy.resistFingerprinting.reduceTimerPrecision.microseconds, whichever is larger.

Specifications

Specification
ECMAScript Language Specification (ECMAScript)
#sec-date.now

Browser compatibility

BCD tables only load in the browser

See also

  • Performance.now() — provides timestamps with sub-millisecond resolution for use in measuring web page performance
  • console.time() / console.timeEnd()