text: // Copyright (C) 2014 by Matthew York
  //
  // 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.
  
  static const long long SECONDS_IN_YEAR = 31556900;
  static const NSInteger SECONDS_IN_MONTH_28 = 2419200;
  static const NSInteger SECONDS_IN_MONTH_29 = 2505600;
  static const NSInteger SECONDS_IN_MONTH_30 = 2592000;
  static const NSInteger SECONDS_IN_MONTH_31 = 2678400;
  static const NSInteger SECONDS_IN_WEEK = 604800;
  static const NSInteger SECONDS_IN_DAY = 86400;
  static const NSInteger SECONDS_IN_HOUR = 3600;
  static const NSInteger SECONDS_IN_MINUTE = 60;
  static const NSInteger MILLISECONDS_IN_DAY = 86400000;