The Rommelsbacher JG 80 yogurt and fresh cheese maker allows for some flexibility in its settings, but there are specific limitations:

- The device comes with 4 preset programs with different temperatures: natural yogurt (42°C), vegan/lactose-free yogurt (38°C), fresh cheese (30°C), and herbal extracts (55°C).
- You can individually adjust the program duration, which is useful for various fermentation times. However, the maximum duration is not explicitly stated as 36 hours, but it does have a 24-hour timer with the option to extend the time manually if needed.

While you can adjust the duration to some extent, it is not clear if the device can run continuously for 36 hours without interruption. It is recommended to consult the user manual or contact the manufacturer's customer service for specific guidance on extended fermentation times.