API: adsbexchange.com

API: http://www.adsbexchange.com and https://public-api.adsbexchange.com/VirtualRadar/AircraftList.json?lat=33.433638&lng=-112.008113&fDstL=0&fDstU=100
Twig-Syntax (use with Template-manager only!):
[jsoncontentimporter url=https://public-api.adsbexchange.com/VirtualRadar/AircraftList.json?lat=33.433638&lng=-112.008113&fDstL=0&fDstU=100 parser=twig id=ID_OF_TEMPLATE_MANAGER_ENTRY]

Code in Template-manager:
{% for f in acList %}
{{f.Op}} {{f.Mdl}}: {{f.Id}}
<br>
{{ (f.PosTime // 1000) | dateformat('%A %m/%d/%y %H:%M:%S ', 'Europe/Berlin', 'nl_NL') }}
<br>
{% if f.From is not empty %}
 ({{f.From}}, {{f.To}})<br>
{% endif %}
 ({{f.Lat}}, {{f.Long}})<hr>
{% endfor %}

The twig-extension “dateformat” accepts three arguments: The format of the date, see PHP strftime for that. The second optional argument sets the Timezone, see PHP List of Supported Timezones for more. If empty the default value of the PHP-Installation is used. The third optional argument sets the Language, see PHP Locale for more. If empty the default value of the PHP-Installation is used.
Example: