Geographic Flags - Trinity Flags for Bahrain, Cyprus, and Madagascar

 Trinity flags are a class of geographic flag, a marker of sorts, to indicate that a particular nation has part of its national territory in the tri-continental zone where Europe, Asia, and Africa are aligned by longitude. 

Cyprus, Madagascar, and Bahrain are island nations that wholly reside in this geographic zone.

The Cyprus Trinity Flag uses the colours of the national flag of Cyprus.

 The Madagascar Trinity flag is based on the flag of Madagascar.

Bahrain's Trinity flag takes colours and conserves design elements.