Date Formatting

1. :formatD(patternOut, patternIn)

Syntax Explanation

Formats a date by accepting an output format patternOut and an optional input format patternIn (defaults to ISO 8601).

Common Examples

{d.createdAt:formatD(YYYY-MM-DD)}           // Outputs 2024-01-15
{d.createdAt:formatD(MMM D, YYYY)}          // Outputs Jan 15, 2024
{d.updatedAt:formatD(MMMM D, YYYY HH:mm)}   // Outputs January 15, 2024 14:30
{d.orderDate:formatD(YYYY/MM/DD HH:mm:ss)}  // Outputs 2024/01/15 14:30:25
{d.birthday:formatD(MM/DD)}                 // Outputs 01/15
{d.meetingTime:formatD(HH:mm)}              // Outputs 14:30
{d.deadline:formatD(dddd, MMMM D, YYYY)}    // Outputs Monday, January 15, 2024

More Format Examples

'20160131':formatD(L)      // Outputs 01/31/2016
'20160131':formatD(LL)     // Outputs January 31, 2016
'20160131':formatD(LLLL)   // Outputs Sunday, January 31, 2016 12:00 AM
'20160131':formatD(dddd)   // Outputs Sunday

Result

The output is the date formatted as specified.

2. :addD(amount, unit, patternIn)

Syntax Explanation

Adds a specified amount of time to a date. Supported units include: day, week, month, quarter, year, hour, minute, second, millisecond.
Parameters:

amount: The quantity to add.
unit: The time unit (case-insensitive).
patternIn: Optional, the input format (defaults to ISO8601).

Example

'2017-05-10T15:57:23.769561+03:00':addD('3', 'day')    // Outputs "2017-05-13T12:57:23.769Z"
'2017-05-10 15:57:23.769561+03:00':addD('3', 'month')      // Outputs "2017-08-10T12:57:23.769Z"
'20160131':addD('3', 'day')       // Outputs "2016-02-03T00:00:00.000Z"
'20160131':addD('3', 'month')     // Outputs "2016-04-30T00:00:00.000Z"
'31-2016-01':addD('3', 'month', 'DD-YYYY-MM')  // Outputs "2016-04-30T00:00:00.000Z"

Result

The output is the new date after the specified time has been added.

3. :subD(amount, unit, patternIn)

Syntax Explanation

Subtracts a specified amount of time from a date. The parameters are the same as in addD.

Example

'2017-05-10T15:57:23.769561+03:00':subD('3', 'day')    // Outputs "2017-05-07T12:57:23.769Z"
'2017-05-10 15:57:23.769561+03:00':subD('3', 'month')      // Outputs "2017-02-10T12:57:23.769Z"
'20160131':subD('3', 'day')       // Outputs "2016-01-28T00:00:00.000Z"
'20160131':subD('3', 'month')     // Outputs "2015-10-31T00:00:00.000Z"
'31-2016-01':subD('3', 'month', 'DD-YYYY-MM')  // Outputs "2015-10-31T00:00:00.000Z"

Result

The output is the new date after the specified time has been subtracted.

4. :startOfD(unit, patternIn)

Syntax Explanation

Sets the date to the start of the specified time unit.
Parameters:

unit: The time unit.
patternIn: Optional, the input format.

Example

'2017-05-10T15:57:23.769561+03:00':startOfD('day')    // Outputs "2017-05-10T00:00:00.000Z"
'2017-05-10 15:57:23.769561+03:00':startOfD('month')      // Outputs "2017-05-01T00:00:00.000Z"
'20160131':startOfD('day')       // Outputs "2016-01-31T00:00:00.000Z"
'20160131':startOfD('month')     // Outputs "2016-01-01T00:00:00.000Z"
'31-2016-01':startOfD('month', 'DD-YYYY-MM')  // Outputs "2016-01-01T00:00:00.000Z"

Result

The output is the date set to the start of the specified unit.

5. :endOfD(unit, patternIn)

Syntax Explanation

Sets the date to the end of the specified time unit.
Parameters are the same as for startOfD.

Example

'2017-05-10T15:57:23.769561+03:00':endOfD('day')    // Outputs "2017-05-10T23:59:59.999Z"
'2017-05-10 15:57:23.769561+03:00':endOfD('month')      // Outputs "2017-05-31T23:59:59.999Z"
'20160131':endOfD('day')       // Outputs "2016-01-31T23:59:59.999Z"
'20160131':endOfD('month')     // Outputs "2016-01-31T23:59:59.999Z"
'31-2016-01':endOfD('month', 'DD-YYYY-MM')  // Outputs "2016-01-31T23:59:59.999Z"

Result

The output is the date set to the end of the specified unit.

6. :diffD(toDate, unit, patternFromDate, patternToDate)

Syntax Explanation

Calculates the difference between two dates and outputs it in the specified unit. Supported units include:

day(s) or d
week(s) or w
quarter(s) or Q
month(s) or M
year(s) or y
hour(s) or h
minute(s) or m
second(s) or s
millisecond(s) or ms (default unit)

Parameters:

toDate: The target date.
unit: The unit for output.
patternFromDate: Optional, the format of the starting date.
patternToDate: Optional, the format of the target date.

Example

'20101001':diffD('20101201')              // Outputs 5270400000
'20101001':diffD('20101201', 'second')      // Outputs 5270400
'20101001':diffD('20101201', 's')           // Outputs 5270400
'20101001':diffD('20101201', 'm')           // Outputs 87840
'20101001':diffD('20101201', 'h')           // Outputs 1464
'20101001':diffD('20101201', 'weeks')       // Outputs 8
'20101001':diffD('20101201', 'days')        // Outputs 61
'2010+10+01':diffD('2010=12=01', 'ms', 'YYYY+MM+DD', 'YYYY=MM=DD')  // Outputs 5270400000

Result

The output is the time difference between the two dates, converted into the specified unit.

7. :convDate(patternIn, patternOut)

Syntax Explanation

Converts a date from one format to another (not recommended for use).
Parameters:

patternIn: The input date format.
patternOut: The output date format.

Example

'20160131':convDate('YYYYMMDD', 'L')      // Outputs "01/31/2016"
'20160131':convDate('YYYYMMDD', 'LL')     // Outputs "January 31, 2016"
'20160131':convDate('YYYYMMDD', 'LLLL')   // Outputs "Sunday, January 31, 2016 12:00 AM"
'20160131':convDate('YYYYMMDD', 'dddd')   // Outputs "Sunday"
1410715640:convDate('X', 'LLLL')          // Outputs "Sunday, September 14, 2014 7:27 PM"

Result

The output is the date converted to the specified format.

8. Date Format Patterns

Common date format symbols (refer to the DayJS documentation):

X: Unix timestamp (in seconds), e.g., 1360013296
x: Unix timestamp in milliseconds, e.g., 1360013296123
YY: Two-digit year, e.g., 18
YYYY: Four-digit year, e.g., 2018
M, MM, MMM, MMMM: Month (number, two-digit, abbreviated, full name)
D, DD: Day (number, two-digit)
d, dd, ddd, dddd: Day of the week (number, minimal, abbreviated, full name)
H, HH, h, hh: Hour (24-hour or 12-hour clock)
m, mm: Minute
s, ss: Second
SSS: Millisecond (3 digits)
Z, ZZ: UTC offset, e.g., +05:00 or +0500
A, a: AM/PM
Q: Quarter (1-4)
Do: Day of month with ordinal, e.g., 1st, 2nd, …
For other formats, refer to the full documentation.
Additionally, there are localized formats based on language such as LT, LTS, L, LL, LLL, LLLL, etc.