curl --request GET \
  --url https://api.pubrio.com/timezones \
  --header 'pubrio-api-key: <api-key>'

{
  "data": [
    {
      "timezone_id": 1,
      "timezone": "Africa/Abidjan",
      "utc_offset": "+00:00"
    },
    "..."
  ]
}