I would like to use Hindu-Arabic numbers in Jekyll i.e. ۱۲۳۴۵۶۷۸۹۰ instead of 1234567890. How can I customize Jekyll to achieve this or which parts of Jekyll should be extended to support this feature?
Jekyll outputs date strings with the date
Liquid filter by default. To customize this behavior, you need to use a plugin to provide an i18n-aware date formatter (filter) to use in your templates.
For example, take a look at i18n_filter.rb which is linked from the official Jekyll documentation.