When can I apply for an ETA for Sri Lanka?

When can I apply for an ETA for Sri Lanka? - Side view of crop unrecognizable female artist with tattoos spraying paint on colorful wall with black patterns on street in city

My parents want to go to Sri Lanka in late September. According to them you need to apply for an ETA beforehand, so they've asked me to walk them through the process. However, during the application, I couldn't continue when I've tried to input their date of arrival and got an error message:

Arrival date should be within 90 days

The official site doesn't show that information anywhere, at least neither in the English nor in the German version. Does that mean that my parents can apply for their ETA only in late June or later and we can simply postpone the application till then?






Pictures about "When can I apply for an ETA for Sri Lanka?"

When can I apply for an ETA for Sri Lanka? - Hand of crop anonymous tattooed person spraying white paint from can on colorful wall while standing on street of city
When can I apply for an ETA for Sri Lanka? - Unrecognizable woman painting graffiti on wall
When can I apply for an ETA for Sri Lanka? - Anonymous artist painting graffiti on street






Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

Images: Felicity Tai, Felicity Tai, Felicity Tai, Felicity Tai