Protocol for Arrivals in and Departures from Greece: https://travel.gov.gr/
Passenger Locator Form (PLF) Register: https://travel.gov.gr/#/user/register
Passenger Locator Form (PLF) Login: https://travel.gov.gr/#/user/login
Hellenic Civil Aviation Authority: http://www.ypa.gr/en/
Transportation in Greece (Greek): https://covid19.gov.gr/category/metafores
Info by US embassy in Athens: https://gr.usembassy.gov/covid-19-information/
Covid 19 Greece live Stats (Greek): https://covid19.gov.gr/covid19-live-analytics
HER Airport Google Place