20th anniversary of continuous on the air of 5W1SA from Samoa since 1998

Atsu, 5W1SA says:

I have enjoyed operating HF and 6m from OC-097, Samoa for the last 20 years. (Approximately 100K QSO logged). I have asked and obtained the callsign 5W20SAMOA from Office of the Regulator as a special event station for celebrate this 20 years amateur radio service from Samoa.

License period is 1st Jan 2018 and 31st Dec 2018. You may hear my callsign before the licenced date, my timezone is UTC+14 hours.