Word origin · etymology
Sanskrit calendrical compound.
Yoga comes from yuj, to join or yoke. Here joining refers to the calendrical combination of the Sun's and Moon's longitudes.
Monier-Williams Sanskrit-English Dictionary: yoga (University of Hyderabad) ↗
How we know · epistemology
Traditional angular combination
Adding the selected sidereal Sun and Moon longitudes gives a reproducible sector index. That sum is a calendrical construction, not a measured interaction, and its interpretation differs from other Indian uses of the word yoga.
Connected concepts
Terms used in this explanation
Sources & provenance
Use the citations beside each section to distinguish a calculation convention, a historical teaching and an editorial example.