On Saturday I got six postcards: one from Indonesia, one from Germany, one from Belgium, one from the USA, one from Hong Kong and one from the United Kingdom.
The card from Indonesia shows the Solar Eclipse on 9th March 2016. The Solar Eclipse was total and started in Indonesia, where it was clearly visible in many parts.
With great matching stamps:
Total Solar Eclipse (whole set) (issued 23-02-2016)
with First Day Special Postmark
The stamps refer to the Javanese myth of Batara Kala swallowing the sun and thus causing the solar eclipse.
Thank You very much Shinta!