Timestamp for 64-bit time_t, nanosecond precision and strftime

JavaScript's native Date will end at 275 thousand years later. 64-bit signed time_t still works for 292 billion years, on the other hand. Date has only milliseconds precision since 20th century. Now we need longer range and higher precisions. Try Live Demo now!

Features

• Longer range for time_t: +292277026596-12-04T15:30:07Z
• Nanoseconds precision: 1970-01-01T00:00:00.000000001Z
• Bundled formatter: "%Y-%m-%dT%H:%M:%S.%NZ", "%a, %b %d %X %Y %z (%Z)"
• Small: just 3KB minified timestamp.min.js available for Web browsers.
• No dependencies: no other module required. Portable pure JavaScript.

Synopsis

var Timestamp = require("timestamp-nano");

Timestamp.fromDate(new Date()).toJSON(); // => "2017-11-26T13:36:22.213Z"

Timestamp.fromString("2017-11-26T13:36:22.213Z").getTimeT(); // => 1511703382

// 64-bit time_t
Timestamp.fromTimeT(1511703382).writeInt64BE(); // => [0,0,0,0,90,26,195,86]

Timestamp.fromInt64BE([0,0,0,0,90,26,195,86]).toDate().getUTCHours(); // => 13

// nanoseconds precision
Timestamp.fromInt64LE([86,195,26,90,0,0,0,0]).addNano(123456789).toJSON(); // => "2017-11-26T13:36:22.123456789Z"

Timestamp.fromString("2017-11-26T13:36:22.123456789Z").getNano(); // => 123456789

Live Demo

• https://kawanet.github.io/timestamp-nano/demo/index.html

Documentation

• https://kawanet.github.io/timestamp-nano/typedoc/classes/timestamp.html

Format Specifiers

toString() method accepts strftime specifier characters as below.

• %% - Literal % character.
• %a - Abbreviated weekday name: Sun to Sat
• %b - Abbreviated month name: Jan to Dec
• %d - Day: 01 to 31 (padded with zero)
• %e - Day: 1 to 31 (padded with space)
• %F - Equivalent to %Y-%m-%d
• %H - Hour: 00 to 23
• %L - Milliseconds: 000 to 999
• %M - Minute: 00 to 59
• %m - Month: 01 to 12
• %N - Nanoseconds: 000000000 to 999999999
• %n - Newline character
• %R - Equivalent to %H:%M
• %S - Second: 00 to 59
• %T - Equivalent to %H:%M:%S
• %t - Tab character
• %X - Equivalent to %T
• %Y - Year: 0000 to 9999, or +275760, -271821, etc.
• %Z - Constant timezone name: GMT
• %z - Constant timezone offset: +0000

Node.js

• https://www.npmjs.com/package/timestamp-nano

npm install timestamp-nano --save

Browsers

• https://rawgit.com/kawanet/timestamp-nano/master/dist/timestamp.min.js

<script src="https://rawgit.com/kawanet/timestamp-nano/master/dist/timestamp.min.js"></script>
<script>
  var dt = new Date();
  var ts = Timestamp.fromDate(dt);
  alert(ts.toString());
</script>

GitHub

• https://github.com/kawanet/timestamp-nano

See Also

• https://www.npmjs.com/package/int64-buffer - for 64bit time_t long long value
• https://www.npmjs.com/package/strftime - for formatting with timezone or locale
• https://github.com/kawanet/cdate - cdate - a compact calendar date and strftime

The MIT License (MIT)

Copyright (c) 2017-2022 Yusuke Kawasaki

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.