How to find Lagna from Date Of Birth? (Roughly)

Lets take an example.
D.O.B = 6 January, 1996.
T.O.B = 12:25 (24hrs format)

Find node of 6 January.

In this way we can move to the node where 6 JANUARY is located. This will look like this:

Locating: The HOUSE of the SUN and the LAGNA.

So by locating the position of node of 6JANUARY, we can find where the SUN is.? This is because the day you were born is where the SUN should be. Got It?
Now the question is:
Q. How to determine at what time the SUN rises for that particular day?
Ans. It is fixed. We normally takes 6:00 am as the time of SUN rise for that particular day.

So, the position of the SUN is when the SUN had risen on the 6th JAN i.e. 6 am in the morning and was in the 9th house (i.e. 9th house from 0 degree). Means in the House of SAGITTARIUS.
And for SUN, each house is of 2hrs, means SUN takes about 2hrs to move through each house in a chart. So total 12 house means 12 x 2hrs = 24 hrs. OK?
Now see the TIME of birth.
Its 12:25 pm, means 6 hrs 25 minutes ahead of SUN rise. So we will move in clock-wise direction and will find that 12th house is the house in which person is born(12:25pm). So that house will become the LAGNA for that person who was born on 6JAN. This means the person born on 6 JAN got LAGNA of PISCES.
Similarly, you can locate LAGNA and position of SUN for other charts as well.
NOTE: This is a rough calculation to locate the position of LAGNA/SUN in your chart.
Thank You.