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Dec 16, 2021 12:43:42

2021

Year

12

Month

16

Day

12

Hour (24)

43

Minute

42

Second

How long ago was

Format

ISO 8601 International standard for representing date and time. Widely used in web services, programming, and data exchange. YYYY-MM-DD'T'HH:MM:SS±hh:mm	2021-12-16T12:43:42
ISO 8601 (Week) Used in planning and reporting YYYY-Www-D	2021-W50-4T12:43:42
RFC 3339 Used in Internet protocols YYYY-MM-DD'T'HH:mm:ss'Z'	2021-12-16T12:43:42Z
RFC 822 / RFC 2822 Used in email protocols ddd, DD MMM YYYY HH:mm:ss 'GMT'	Thu, 16 Dec 2021 12:43:42 +0000
RFC 7231 The format aligns with RFC 822, but RFC 7231 specifies and standardizes its use in HTTP Day, DD Mon YYYY HH:MM:SS GMT	Thu, 16 Dec 2021 12:43:42 +0000
UNIX Time (Epoch Time) Widely used in programming Seconds since January 1, 1970	1639658622
ISO 9075 A standard related to SQL query language YYYY-MM-DD HH:MM:SS	2021-12-16 12:43:42
USA Date format commonly used in the USA MM/DD/YYYY HH:MM:SS	12-16-2021 12:43:42
British/French, EU Date format commonly used in Europe DD/MM/YY HH:MM:SS	16/12/2021 12:43:42
German Date format commonly used in Germany DD.MM.YYYY HH:MM:SS	16.12.2021 12:43:42
Italian Date format commonly used in Italy DD-MM-YYYY HH:MM:SS	16-12-2021 12:43:42
Japan Date format commonly used in Japan YYYY/MM/DD HH:MM:SS	2021/12/16 12:43:42
Chinese Date Format used to represent dates in the Chinese lunisolar calendar SS (Animal) (M'th month), D, YYYY	02 (Ox) (12'th month), 16, 2021
Excel date/time Used internally by Excel to enable easy calculations with dates and times Dates and times in Excel are stored as floating-point numbers	44546.530347222
Microsoft Timestamp / FileTime Used in Windows system APIs for file and directory timestamp handling 100-nanoseconds since Jan 1, 1601	132841322220000000
Text Date Textual representation of a date MMM DD, YYYY HH:MM:SS	Dec 16, 2021 12:43:42
Mac Timestamp Date and time format used in macOS Seconds since January 1, 2001	661351422
Mongo ObjectID Unique identifier format used in MongoDB 12-byte hexadecimal number	61bb347e0000000000000000
Julian Day Number Date format used in astronomy Number of days since January 1, 4713 BC	2459565.03035

What day of week 16/12/2021?

16 December 2021 is Thursday.

How long ago was 2021-12-16 12:43:42?

Current time is Saturday, February 22, 2025, 03:02:22

Years	3
Months	38
Weeks	166
Days	1163
Hours	27926
Minutes	1675578
Seconds	100534720

Pagination navigate

2021 Year

12 Month

16 Day

12 Hour (24)

43 Minute

42 Second

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