When must John Smith be brought before a judge to comply with the 36-hour rule following his arrest at 1900 hours on Monday?

The 36-hour rule requires that an arrested individual be brought before a judge within a specified period following their arrest. In this scenario, John Smith was arrested at 1900 hours (7:00 PM) on Monday.

To calculate the deadline for bringing John before a judge, we start from the time of his arrest. Adding 36 hours to 1900 hours on Monday, we first cover 24 hours to reach 1900 hours on Tuesday, which is the end of the first day. This leaves us with 12 additional hours to account for. Adding these 12 hours to 1900 hours on Tuesday leads us to 0700 hours (7:00 AM) on Wednesday.

However, there is a specific consideration for when the time frame ends with regards to the court's business hours, which typically would allow until noon of that day for practical purposes around court availability. Therefore, John needs to be presented to a judge before the cut-off of noon on Wednesday to fully adhere to the 36-hour rule.

The correct answer reflects this understanding by indicating noon on Wednesday as the endpoint of compliance with the rule, ensuring that John Smith is presented before a judge within the mandatory timeframe after his arrest.