// Note that if you don't include the mask argument,
// dateFormat.masks.default is used
dateFormat(now);
// Sat Jun 09 2007 17:46:21
// And if you don't include the date argument,
// the current date and time is used
dateFormat();
// Sat Jun 09 2007 17:46:22
// You can also skip the date argument (as long as your mask doesn't
// contain any numbers), in which case the current date/time is used
dateFormat("longTime");
// 5:46:22 PM EST
// And finally, you can convert local time to UTC time. Simply pass in
// true as an additional argument (no argument skipping allowed in this case):
dateFormat(now, "longTime", true);
// 10:46:21 PM UTC
// ...Or add the prefix "UTC:" or "GMT:" to your mask.
dateFormat(now, "UTC:h:MM:ss TT Z");
// 10:46:21 PM UTC
// You can also get the ISO 8601 week of the year:
dateFormat(now, "W");
// 42
// and also get the ISO 8601 numeric representation of the day of the week:
dateFormat(now,"N");
// 6
```
### Mask options
Mask | Description
---- | -----------
`d` | Day of the month as digits; no leading zero for single-digit days.
`dd` | Day of the month as digits; leading zero for single-digit days.
`ddd` | Day of the week as a three-letter abbreviation.
`dddd` | Day of the week as its full name.
`m` | Month as digits; no leading zero for single-digit months.
`mm` | Month as digits; leading zero for single-digit months.
`mmm` | Month as a three-letter abbreviation.
`mmmm` | Month as its full name.
`yy` | Year as last two digits; leading zero for years less than 10.
`yyyy` | Year represented by four digits.
`h` | Hours; no leading zero for single-digit hours (12-hour clock).
`hh` | Hours; leading zero for single-digit hours (12-hour clock).
`H` | Hours; no leading zero for single-digit hours (24-hour clock).
`HH` | Hours; leading zero for single-digit hours (24-hour clock).
`M` | Minutes; no leading zero for single-digit minutes.
`MM` | Minutes; leading zero for single-digit minutes.
`N` | ISO 8601 numeric representation of the day of the week.
`o` | GMT/UTC timezone offset, e.g. -0500 or +0230.
`s` | Seconds; no leading zero for single-digit seconds.
`ss` | Seconds; leading zero for single-digit seconds.
`S` | The date's ordinal suffix (st, nd, rd, or th). Works well with `d`.
`l` | Milliseconds; gives 3 digits.
`L` | Milliseconds; gives 2 digits.
`t` | Lowercase, single-character time marker string: a or p.
`tt` | Lowercase, two-character time marker string: am or pm.
`T` | Uppercase, single-character time marker string: A or P.
`TT` | Uppercase, two-character time marker string: AM or PM.
`W` | ISO 8601 week number of the year, e.g. 42
`Z` | US timezone abbreviation, e.g. EST or MDT. With non-US timezones or in the
`'...'`, `"..."` | Literal character sequence. Surrounding quotes are removed.
`UTC:` | Must be the first four characters of the mask. Converts the date from local time to UTC/GMT/Zulu time before applying the mask. The "UTC:" prefix is removed.
### Named Formats
Name | Mask | Example
---- | ---- | -------
`default` | `ddd mmm dd yyyy HH:MM:ss` | Sat Jun 09 2007 17:46:21
