{"id":"vidhyamitra:city-day:thane:1971-03-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/thane/1971-03-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1971-03-13","date_display":"March 13, 1971 CE","panchanga":{"method":"Sūrya Siddhānta + Bhāskara-II iterative manda + Kerala-school (Mādhava-Nīlakaṇṭha) evection + variation + annual equation","engine_version":"2.0 (Kerala-school enhanced)","accuracy_note":"Sub-degree on Moon at any Kali-Yuga date (~2-5° residual max)","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":1971,"month":3,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441023.770833,"kali_year":5072,"ahargana":1852558.2708,"sun":{"sidereal_longitude":328.5983,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":160.5082,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":16,"name":"Pratipada","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pratipada","elongation_degrees":191.9099,"elapsed_within_tithi_degrees":11.9099},"nakshatra":{"number":13,"name":"Hasta","pada":1,"moon_longitude":160.5082,"elapsed_within_degrees":0.5082},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":129.1065},"karana":{"half_tithi_index":31,"name":"Kaulava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"sky":{"method":"Sūrya-Siddhāntic Bhāskara-II 4-step iteration with atan2-based śīghra + varying peripheries + lunar latitude","engine_version":"3.0 (Pūrṇa — complete SS implementation)","tradition_sources":"Āryabhaṭīya 499 CE → SS Ch.1-5 Burgess 1860 → Siddhānta-Śiromaṇi Bhāskara II 1150 → Tantrasaṅgraha Nīlakaṇṭha 1501","input":{"year":1971,"month":3,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2441023.770833,"ahargana":1852558.2708,"kali_year":5072,"ayanamsa_lahiri":23.4506,"grahas":{"sun":{"sidereal_longitude":328.355899,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":158.415299,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false,"latitude":-2.7663},"mars":{"sidereal_longitude":247.28769899999998,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":334.57629900000006,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":223.58889899999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":287.393999,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":25.264899000000014,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":302.5477,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":122.5477,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false}},"panchang":{"method":"Sūrya Siddhānta + Bhāskara-II iterative manda + Kerala-school (Mādhava-Nīlakaṇṭha) evection + variation + annual equation","engine_version":"2.0 (Kerala-school enhanced)","accuracy_note":"Sub-degree on Moon at any Kali-Yuga date (~2-5° residual max)","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":1971,"month":3,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441023.770833,"kali_year":5072,"ahargana":1852558.2708,"sun":{"sidereal_longitude":328.5983,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":160.5082,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":16,"name":"Pratipada","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pratipada","elongation_degrees":191.9099,"elapsed_within_tithi_degrees":11.9099},"nakshatra":{"number":13,"name":"Hasta","pada":1,"moon_longitude":160.5082,"elapsed_within_degrees":0.5082},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":129.1065},"karana":{"half_tithi_index":31,"name":"Kaulava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.766,"elongation":168.09},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.766,"opposition_distance":11.91}},"eclipse_window_40days":[]},"city":{"slug":"thane","name":"Thane, Maharashtra","lat":19.2183,"lon":72.9781,"tz_offset_hours":5.5,"state":"Maharashtra","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"thane","name":"Thane, Maharashtra","lat":19.2183,"lon":72.9781,"tz_offset_hours":5.5,"state":"Maharashtra","country":"IN","tier":"tier-1"},"sunriseLocal":"06:49","sunsetLocal":"18:47","solarNoonLocal":"12:48","dayLengthHours":11.96661151209939,"dayLengthDisplay":"11 Hours 58 Mins 00 Secs","nightLengthDisplay":"12 Hours 02 Mins 00 Secs","moonriseLocal":"19:27","moonsetLocal":"07:30","rahuKala":{"name":"Rāhu Kāla","start":"09:49","end":"11:19","startHours":9.813439120788633,"endHours":11.309265559801059,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:18","end":"15:48","startHours":14.300918437825906,"endHours":15.796744876838329,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:49","end":"08:19","startHours":6.821786242763786,"endHours":8.317612681776211,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:37","end":"10:01","startHours":9.613995595586978,"endHours":10.01288264599029,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:19","end":"07:38","startHours":7.320395055767928,"endHours":7.639504696090578,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:24","end":"13:12","startHours":12.406204948410167,"endHours":13.203979049216795,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:14","end":"06:01","startHours":5.226238041150534,"endHours":6.024012141957161,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:49","end":"06:49","startHours":5.824568616755504,"endHours":6.821786242763786,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:48","end":"15:36","startHours":14.799527250830046,"endHours":15.597301351636672,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:35","end":"18:59","startHours":18.588397754863177,"endHours":18.988397754863175,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:47","end":"19:17","startHours":18.788397754863176,"endHours":19.287006567867316,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:32","end":"20:17","startHours":18.538397754863176,"endHours":20.288397754863176,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:24","end":"01:12","startHours":24.406204948410167,"endHours":25.203979049216795,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"06:49","end":"08:19","startHours":6.821786242763786,"endHours":8.317612681776211,"quality":"inauspicious"},{"name":"Śubha","start":"08:19","end":"09:49","startHours":8.317612681776211,"endHours":9.813439120788633,"quality":"auspicious"},{"name":"Roga","start":"09:49","end":"11:19","startHours":9.813439120788633,"endHours":11.309265559801059,"quality":"inauspicious"},{"name":"Udveg","start":"11:19","end":"12:48","startHours":11.309265559801059,"endHours":12.80509199881348,"quality":"inauspicious"},{"name":"Chala","start":"12:48","end":"14:18","startHours":12.80509199881348,"endHours":14.300918437825906,"quality":"neutral"},{"name":"Labha","start":"14:18","end":"15:48","startHours":14.300918437825906,"endHours":15.796744876838329,"quality":"auspicious"},{"name":"Amṛta","start":"15:48","end":"17:18","startHours":15.796744876838329,"endHours":17.292571315850754,"quality":"auspicious"},{"name":"Kāla","start":"17:18","end":"18:47","startHours":17.292571315850754,"endHours":18.788397754863176,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:47","end":"20:18","startHours":18.788397754863176,"endHours":20.29257131585075,"quality":"auspicious"},{"name":"Amṛta","start":"20:18","end":"21:48","startHours":20.29257131585075,"endHours":21.79674487683833,"quality":"auspicious"},{"name":"Kāla","start":"21:48","end":"23:18","startHours":21.79674487683833,"endHours":23.300918437825906,"quality":"inauspicious"},{"name":"Śubha","start":"23:18","end":"00:48","startHours":23.300918437825906,"endHours":24.80509199881348,"quality":"auspicious"},{"name":"Roga","start":"00:48","end":"02:19","startHours":24.80509199881348,"endHours":26.309265559801055,"quality":"inauspicious"},{"name":"Udveg","start":"02:19","end":"03:49","startHours":26.309265559801055,"endHours":27.813439120788633,"quality":"inauspicious"},{"name":"Chala","start":"03:49","end":"05:19","startHours":27.813439120788633,"endHours":29.31761268177621,"quality":"neutral"},{"name":"Labha","start":"05:19","end":"06:49","startHours":29.31761268177621,"endHours":30.821786242763785,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:49","end":"07:49","startHours":6.821786242763786,"endHours":7.821786242763786,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"07:49","end":"08:49","startHours":7.821786242763786,"endHours":8.821786242763785,"planetary_lord":"Moon"},{"name":"Hora 3","start":"08:49","end":"09:49","startHours":8.821786242763785,"endHours":9.821786242763785,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"09:49","end":"10:49","startHours":9.821786242763785,"endHours":10.821786242763785,"planetary_lord":"Venus"},{"name":"Hora 5","start":"10:49","end":"11:49","startHours":10.821786242763785,"endHours":11.821786242763785,"planetary_lord":"Sun"},{"name":"Hora 6","start":"11:49","end":"12:49","startHours":11.821786242763785,"endHours":12.821786242763785,"planetary_lord":"Mars"},{"name":"Hora 7","start":"12:49","end":"13:49","startHours":12.821786242763785,"endHours":13.821786242763785,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"13:49","end":"14:49","startHours":13.821786242763785,"endHours":14.821786242763785,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"14:49","end":"15:49","startHours":14.821786242763785,"endHours":15.821786242763785,"planetary_lord":"Moon"},{"name":"Hora 10","start":"15:49","end":"16:49","startHours":15.821786242763785,"endHours":16.821786242763785,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"16:49","end":"17:49","startHours":16.821786242763785,"endHours":17.821786242763785,"planetary_lord":"Venus"},{"name":"Hora 12","start":"17:49","end":"18:49","startHours":17.821786242763785,"endHours":18.821786242763785,"planetary_lord":"Sun"},{"name":"Hora 13","start":"18:49","end":"19:49","startHours":18.821786242763785,"endHours":19.821786242763785,"planetary_lord":"Mars"},{"name":"Hora 14","start":"19:49","end":"20:49","startHours":19.821786242763785,"endHours":20.821786242763785,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"20:49","end":"21:49","startHours":20.821786242763785,"endHours":21.821786242763785,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"21:49","end":"22:49","startHours":21.821786242763785,"endHours":22.821786242763785,"planetary_lord":"Moon"},{"name":"Hora 17","start":"22:49","end":"23:49","startHours":22.821786242763785,"endHours":23.821786242763785,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"23:49","end":"00:49","startHours":23.821786242763785,"endHours":24.821786242763785,"planetary_lord":"Venus"},{"name":"Hora 19","start":"00:49","end":"01:49","startHours":24.821786242763785,"endHours":25.821786242763785,"planetary_lord":"Sun"},{"name":"Hora 20","start":"01:49","end":"02:49","startHours":25.821786242763785,"endHours":26.821786242763785,"planetary_lord":"Mars"},{"name":"Hora 21","start":"02:49","end":"03:49","startHours":26.821786242763785,"endHours":27.821786242763785,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"03:49","end":"04:49","startHours":27.821786242763785,"endHours":28.821786242763785,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"04:49","end":"05:49","startHours":28.821786242763785,"endHours":29.821786242763785,"planetary_lord":"Moon"},{"name":"Hora 24","start":"05:49","end":"06:49","startHours":29.821786242763785,"endHours":30.821786242763785,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-West","rahuVasa":"East","anandadiYoga":{"name":"Vajra","quality":"Inauspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-3.249467196153224,"eotMinutes":-10.217919928808794,"ayanamsa":23.4506}},"calendars":{"vikram_samvat":2028,"vikram_samvatsara":"Raktākṣī","saka_samvat":1893,"saka_samvatsara":"Virodhakṛt","bengali_samvat":1378,"malayalam_era":1147,"nanakshahi_year":502,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Caitra","lunar_month_amanta":"Phālguna","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kumbha (Māsi)","ritu":"Vasanta (Spring)","display_summary":"Caitra Kṛṣṇa Pratipada · Vikram 2028 Raktākṣī · Śaka 1893 Virodhakṛt"},"festivals":[],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"thane"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga March 13, 1971 CE · Thane, Maharashtra · Vidhyamitra","description":"March 13, 1971 CE for Thane, Maharashtra: Kṛṣṇa Pratipada, sūryodaya 06:49, sūryāsta 18:47.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/thane/1971-03-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/thane/1971-03-13","sa":"https://sa.vidhyamitra.com/city/thane/1971-03-13","hi":"https://hi.vidhyamitra.com/city/thane/1971-03-13","x-default":"https://vidhyamitra.com/city/thane/1971-03-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T21:16:55.040Z","verification":{"type":"multi-marker","confidence":"canonical"}},{"pillar":"Vidhyamitra-Tier2","pillar_version":"0.1.0","method":"Spherical astronomy + Lahiri ayanamsa + standard solar declination + EoT correction","retrieved_at":"2026-06-02T21:16:55.040Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T21:16:55.040Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}