Implementing custom timezone for structured data

This tutorial was contributed by Shraddha Kesari & Nandakishore Prakash Rao

By default the date schema for the publishers in structured data is shown in the UTC time standard. Some publishers require the dates in their structured data to be of a specific timezone.

Adding custom timezone:

To enable this feature the @quintype/seo library needs to be updated to v1.38.27.

The custom timezone can be added by passing the timezone value with the key as timezone inside the data in _loadData() function in load-data.js file.

return _loadData().then((data) => {
  return {
    data: Object.assign({}, data, {
      navigationMenu: getNavigationMenuArray(,
      timezone: "Asia/Kolkata"

The expected value of date property in the structured data should be of the format [-]CCYY-MM-DDThh:mm:ss[Z|(+|-)hh:mm]([optional data]).

Ex: 2021-04-31T10:23:45+05:30