Alternative Kali Yuga Ideas:

Sri Yukteswar's View: One well-known alternate take comes from 19th-20th century Indian yogi and astronomer Sri Yukteswar and in his book The Holy Science, he proposes a shorter 24,000 year full Yuga cycle, with Kali Yuga itself lasting 2400 years (1,200 years up, 1,200 years down).So in Sri Yukteswar's timeline Kali Yuga ended back in 1699 CE. Wed now be in an ascending Dvapara Yuga marked by growing knowledge and enlightenment.

Esoteric or Occult Perspectives: Some esoteric or occult groups also talk about shorter Yuga cycles, maybe based on astrological or numerological concepts. They might apply the 2,700-year cycle as smaller epochs within the bigger Yuga timeline. But these ideas aren't widely accepted in mainstream Hinduism.

Western Interpretations: Certain Western scholars or New Age authors may rework the Yugas to match historical events, coming up with alternate Kali Yuga durations like 2700 years. These are usually just speculative takes not actually grounded in Hindu texts.

In summary, while the traditional Hindu view of Kali Yuga describes a 432,000-year duration, alternative interpretations like Sri Yukteswar's suggest much shorter cycles, with some proposing 2,400 to 2,700-year cycles. These views are less common and are considered unconventional within mainstream Hinduism.