Localization And Date Formatting

gantt.labels localizes packaged option labels, while gantt.dateFormats controls date display and parsing across the task table, tooltips, editor, and timeline.

grid.gantt = {
  ...project,
  labels: {
    taskMode: { auto: 'Automatisch', manual: 'Manuell' },
    status: {
      complete: 'Abgeschlossen',
      'on-schedule': 'Im Plan',
      late: 'Verspätet',
      'future-task': 'Zukünftig',
    },
    workflowStatus: {
      'not-started': 'Nicht begonnen',
      'in-progress': 'In Arbeit',
      done: 'Erledigt',
      blocked: 'Blockiert',
    },
  },
  dateFormats: {
    locale: 'de-DE',
    timeZone: 'Europe/Berlin',
    table: { day: '2-digit', month: '2-digit', year: 'numeric' },
    tooltip: { dateStyle: 'medium' },
  },
};

Task values remain ISO date or UTC ISO date-time strings. Formatting changes presentation, not persisted data. When an editor uses a non-ISO text format, provide both a formatter and parser so submitted values return to the supported ISO contract.

Use one project time zone, explicit calendar time zones, and UTC date-time values when hour/minute precision matters. See Configuration Reference for callback contexts and parsing rules.