Post #1740281

TIL that with iOS set to fi-FI, in the Contacts app, adding a birthday when a contact does not already have one set always sets a Gregorian birthday. However, setting a second birthday defaults to a Hijri birthday with possibility to switch to Hebrew, Chinese, Korean, or Vietnamese. Now I have questions: Which Hijri calendar variant is this? ICU4C has four variants. What’s the Vietnamese calendar back end? ICU4C doesn’t have one. Does the Vietnamese calendar still have a maintenance authority?