11. Genuine solar calendars did not appear until the following Neolithic period. 12. One grouping from the Bronze Age has been interpreted as a solar calendar . 13. They invest the solar calendar with greater, almost superstitious significance. 14. The solar calendar is based on the " Surya Siddhanta ", a Sanskrit astronomical text. 15. Its ostensible purpose was to pause long enough to resynchronize the lunar and solar calendars . 16. In Tibet, the Tibetan calendar lags approximately four to six weeks behind the solar calendar . 17. The day marks the beginning of the New Year in the traditional Hindu Solar Calendar . 18. "' Epagomenal "'days are days within a solar calendar that are outside any regular month. 19. Maha Shivaratri is celebrated over three or ten days based on the Hindu luni-solar calendar . 20. Fasli which means ( " harvest " ) is derived from the Hindu Samavat solar Calendar .
