Sthira-daśā ('fixed daśā') is one of Jaimini's secondary daśās. Unlike cara-rāśi-daśā where each rāśi's duration depends on a chart-specific counting rule, sthira-daśā uses fixed per-sign periods: 7 years for movable (cara) signs, 8 for fixed (sthira), 9 for dual-natured (dvi-svabhāva). The total cycle is 4×7 + 4×8 + 4×9 = 96 years.
Interpretive use: sthira-daśā provides a 'rougher' timing frame than cara-daśā and acts as a cross-check. When both cara-daśā and sthira-daśā emphasize the same rāśi or graha in a window, the interpretive signal is stronger. Adhy. 3 · Pāda 2 also covers Niryāṇa-daśā and Sūla-daśā — additional sign-based timing systems with specialized applications (Niryāṇa for longevity-end indications, Sūla for ariṣṭa-class events).