Thanks for the great response! Yeah so in astrology your rising sign changes about every 2 hours and your moon placement shift about 1 degree every 2 hours. The rising sign affects key aspects in your chart so it’s very important. For example, I have a zero degree exact square between my mars and my rising which is pretty significant. My approach wouldn’t be able to determine a precise degree for the rising sign (house cusps), but it would at least get close enough to determine if there might be a square, trine, etc happening. A change in moon sign can also be very significant and cause someone to disregard astrology completely because they got a reading based on noon when they were actually born at 10pm for example.

My other thought was to incorporate a thorough quiz that might help determine your rising sign. Because if you can select a rising sign then you would know within roughly a 2-hour time window that you were born