Two ways , one: you can use any astrology software like RVA Astrology software after entering your birth details it will show you the planetary positions janam kundali . enter birth time in 24hr format watch this demo video about RVA Astrology Software

https://www.rahasyavedicastrology.com/rva-software/

https://www.youtube.com/watch?v=pvbUxWkTaaA&list=PLvmzzcGHiU3QjMv9afy1qT75FFTP2axNa

Second way : we need to manually prepare it by following certain astrological calculation, like mentioned in ep0 in our channel we will be covering this in future. for now if you are more interested to learn calculation part relay on any books

https://www.youtube.com/watch?v=4v0GGUghwyE&list=PLvmzzcGHiU3TfI5LO2G1JTHPmT3sZqJZe