Hindu Sunrise and Sunset is different then Astronomical Sunrise and sunset. Most Newspapers publish Astronomical value of sunrise and sunset
Hindu sunrise the sunrise time can be calculated as sum of Astronomical Sunrise, time taken by Sun to rise half of its diameter.
Hindu Sunrise = Astronomical Sunrise + Time taken by the Sun to rise half of its diameter + Time taken by the Sun to rise further to neutralize refraction effect.
Similarly, Hindu Sunset = Astronomical Sunset - Time taken by the Sun to set half of its diameter - Time taken by the Sun to set further to neutralize refraction effect.
Vedic Astrology Calculations depends on Hindu sunrise and Hindu set timing. Astronomical timings of sunrise and sunset cannot be used.
Sunrise and sunset are very important for spiritual awakening process in order to attain Moksha or enlightenment.