Complex sentence: As the Guru principle is 1000 times more active during this period, when compared to any other day during this year, the satseva done on Guru Poornima fetches substantial grace of the Guru for their spiritual progress.
Split into simpler sentences: As the Guru principle is 1000 times more active during this period. When compared to any other day during this year, the satseva done fetches substantial grace of the Guru for their spiritual progress.