In Jainism, the time until which you can eat depends on your specific practice and sect:

1. For Lay Followers (Śrāvakas):

Many Jains observe the practice of not eating after sunset (pratikraman samay or sandhyā). This is to avoid harming small living beings that become more active after dark and to maintain discipline.

1. For Monks and Nuns (Śramaṇas):

Jain monks and nuns are more strict. They typically eat only during daylight hours, often before noon (pūrvāhṇa), and never after sunset.

So, as a layperson, you should ideally finish eating before sunset. If you follow stricter vows (like upvās or certain vratas), the rules may be even more restrictive.

Summary: You should try to complete your meals before sunset, in accordance with Jain principles of ahimsa (non-violence) and self-discipline.