Answer

If you are doing Chovihar, then you should finish eating and drinking before sunset.

So, finishing at 6:47 pm is acceptable only if sunset was after 6:47 pm at your location on that day.

If sunset was 6:47 pm or earlier, then ideally Chovihar was not properly maintained.

Explanation

In Jain practice, Chovihar means complete renunciation of food and water after sunset until the next day’s proper time.

Traditionally, one should not wait until the exact last moment. It is better to finish a little earlier to avoid doubt.

Takeaway

For Chovihar, always check the local sunset time and try to finish food and water a few minutes before sunset.