Luka-Era Date

A year-week calendar with epoch to the birthday of Luka Megurine.

Who is Luka Megurine

See Vocaloid CV03 And Luka V4X

About Luka-Era Date and Year-Week Calendar

• The Luka-Era Date (LE-Date) consist of 4 parts as: LE{YEAR}{WEEK}{DAY}, for example: LE6005

• The LE stands for Luka-Era

• Field {YEAR} starts from 2009 which numbered as 0

• Field {WEEK} starts from the week of date Jan 30, numbered as 0

• Field {DAY} starts from Sunday numbered as 0

• The day before Jan 30 counts in the 52th week if they're in the same week, and Jan 30 resets the week number to 0, it means that week has two different week numbers before and after Jan 30

• LE or {DAY} fields can be omitted for abbreviating as LE{Year}{Week} or simply {YEAR}{WEEK}

Installation

npm install -g luka-era-date

Usage

Usage: luka-era-date [OPTIONS] [YYYY-MM-DD] ...

Convert datetime to Luka-Era date

Options:
  -l    --ledate LEDATE     Get original datetime from LEDATE
  -h    --help              Print this message

API

var LukaEraDate = require('luka-era-date'),
    date1 = new LukaEraDate(),  // use current datetime
    date2 = new LukaEraDate( new Date('2015-01-30T00:00:00Z') ),  // use specific date
    date3 = LukaEraDate.parse('LE6005')  // use LE-Date string
    date4 = LukaEraDate.parse('6005')  // or its abbreviation
;
console.log( date1.toString() );  // to string prefixed with 'LE'
console.log( date2.valueOf() );  // to number consist of year + week + day
console.log( String( date3 ));  // the same as .toString()
console.log( Number( date4 ));  // the same as .valueOf()

License

The MIT License (MIT)

Copyright (c) 2009-2017, Nystearia nystearia@gmail.com

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.