7 calls to system_get_date_types()

locale_date_format_form in drupal/modules/locale/locale.admin.inc: Provide date localization configuration options to users.
locale_date_format_form_submit in drupal/modules/locale/locale.admin.inc: Submit handler for configuring localized date formats on the locale_date_format_form.
locale_get_localized_date_format in drupal/includes/locale.inc: Select locale date format details from database.
system_add_date_format_type_form_validate in drupal/modules/system/system.admin.inc: Validate system_add_date_format_type form submissions.
system_date_time_settings in drupal/modules/system/system.admin.inc: Form builder; Configure the site date and time settings.
system_delete_date_format_type_form in drupal/modules/system/system.admin.inc: Menu callback; present a form for deleting a date type.
system_delete_date_format_type_form_submit in drupal/modules/system/system.admin.inc: Delete a configured date type.

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