Indology, Ancient Indian History, Indian Astronomy, Metrology, Hinduism.
summer solstice was 18 muhūrtas and shortest daylight period on winter solstice was 12 muhūrtas at the location where Vedāṅga Jyotiṣa was written. This means that muhūrta was of a fixed duration of 48 minutes and did not change with seasons. Nāḍikā being half of muhūrta was also of fixed duration