{"id":"vidhyamitra:city-day:thane:2018-01-31:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/thane/2018-01-31","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2018-01-31","date_display":"January 31, 2018 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":2018,"month":1,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458149.770833,"kali_year":5119,"ahargana":1869684.2708,"sun":{"sidereal_longitude":286.9643,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":100.6847,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":173.7204,"elapsed_within_tithi_degrees":5.7204},"nakshatra":{"number":8,"name":"Puṣya","pada":3,"moon_longitude":100.6847,"elapsed_within_degrees":7.3514},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":27.649},"karana":{"half_tithi_index":28,"name":"Viṣṭi"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":2018,"month":1,"day":31,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2458149.770833,"ahargana":1869684.2708,"kali_year":5119,"ayanamsa_lahiri":24.1056,"grahas":{"sun":{"sidereal_longitude":286.99735999999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"moon":{"sidereal_longitude":99.71575999999999,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false,"latitude":-1.1215},"mars":{"sidereal_longitude":218.36246000000006,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":274.87086,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":206.82596,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":291.95596,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":250.48496,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":115.1298,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":295.1298,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","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":2018,"month":1,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458149.770833,"kali_year":5119,"ahargana":1869684.2708,"sun":{"sidereal_longitude":286.9643,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":100.6847,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":173.7204,"elapsed_within_tithi_degrees":5.7204},"nakshatra":{"number":8,"name":"Puṣya","pada":3,"moon_longitude":100.6847,"elapsed_within_degrees":7.3514},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":27.649},"karana":{"half_tithi_index":28,"name":"Viṣṭi"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.121,"elongation":173.72},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.121,"opposition_distance":6.28}},"eclipse_window_40days":[{"offset_days":16,"type":"solar","occurs":true,"moon_latitude":-0.855,"elongation":1.98}]},"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":"07:13","sunsetLocal":"18:30","solarNoonLocal":"12:52","dayLengthHours":11.285657922939144,"dayLengthDisplay":"11 Hours 17 Mins 08 Secs","nightLengthDisplay":"12 Hours 42 Mins 52 Secs","moonriseLocal":"17:52","moonsetLocal":"06:53","rahuKala":{"name":"Rāhu Kāla","start":"12:52","end":"14:16","startHours":12.860286475697368,"endHours":14.270993716064762,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:38","end":"10:02","startHours":8.62816475459519,"endHours":10.038871994962582,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"11:27","end":"12:52","startHours":11.449579235329974,"endHours":12.860286475697368,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:51","end":"10:14","startHours":9.85077769624693,"endHours":10.226966293678235,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:41","end":"07:59","startHours":7.687693261016927,"endHours":7.988644138961971,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:29","end":"13:14","startHours":12.484097878266063,"endHours":13.236475073128673,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:43","end":"06:28","startHours":5.712703124502577,"endHours":6.465080319365186,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:17","end":"07:13","startHours":6.276986020649534,"endHours":7.217457514227796,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:44","end":"15:30","startHours":14.741229462853891,"endHours":15.4936066577165,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:18","end":"18:42","startHours":18.30311543716694,"endHours":18.70311543716694,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:30","end":"18:58","startHours":18.50311543716694,"endHours":18.973351183956073,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:15","end":"20:00","startHours":18.25311543716694,"endHours":20.00311543716694,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:29","end":"01:14","startHours":24.484097878266063,"endHours":25.236475073128673,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"07:13","end":"08:38","startHours":7.217457514227796,"endHours":8.62816475459519,"quality":"auspicious"},{"name":"Amṛta","start":"08:38","end":"10:02","startHours":8.62816475459519,"endHours":10.038871994962582,"quality":"auspicious"},{"name":"Kāla","start":"10:02","end":"11:27","startHours":10.038871994962582,"endHours":11.449579235329974,"quality":"inauspicious"},{"name":"Śubha","start":"11:27","end":"12:52","startHours":11.449579235329974,"endHours":12.860286475697368,"quality":"auspicious"},{"name":"Roga","start":"12:52","end":"14:16","startHours":12.860286475697368,"endHours":14.270993716064762,"quality":"inauspicious"},{"name":"Udveg","start":"14:16","end":"15:41","startHours":14.270993716064762,"endHours":15.681700956432154,"quality":"inauspicious"},{"name":"Chala","start":"15:41","end":"17:06","startHours":15.681700956432154,"endHours":17.092408196799546,"quality":"neutral"},{"name":"Labha","start":"17:06","end":"18:30","startHours":17.092408196799546,"endHours":18.50311543716694,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"18:30","end":"20:06","startHours":18.50311543716694,"endHours":20.092408196799546,"quality":"inauspicious"},{"name":"Chala","start":"20:06","end":"21:41","startHours":20.092408196799546,"endHours":21.681700956432152,"quality":"neutral"},{"name":"Labha","start":"21:41","end":"23:16","startHours":21.681700956432152,"endHours":23.270993716064762,"quality":"auspicious"},{"name":"Amṛta","start":"23:16","end":"00:52","startHours":23.270993716064762,"endHours":24.860286475697368,"quality":"auspicious"},{"name":"Kāla","start":"00:52","end":"02:27","startHours":24.860286475697368,"endHours":26.449579235329974,"quality":"inauspicious"},{"name":"Śubha","start":"02:27","end":"04:02","startHours":26.449579235329974,"endHours":28.038871994962584,"quality":"auspicious"},{"name":"Roga","start":"04:02","end":"05:38","startHours":28.038871994962584,"endHours":29.62816475459519,"quality":"inauspicious"},{"name":"Udveg","start":"05:38","end":"07:13","startHours":29.62816475459519,"endHours":31.217457514227796,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:13","end":"08:13","startHours":7.217457514227796,"endHours":8.217457514227796,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"08:13","end":"09:13","startHours":8.217457514227796,"endHours":9.217457514227796,"planetary_lord":"Venus"},{"name":"Hora 3","start":"09:13","end":"10:13","startHours":9.217457514227796,"endHours":10.217457514227796,"planetary_lord":"Sun"},{"name":"Hora 4","start":"10:13","end":"11:13","startHours":10.217457514227796,"endHours":11.217457514227796,"planetary_lord":"Mars"},{"name":"Hora 5","start":"11:13","end":"12:13","startHours":11.217457514227796,"endHours":12.217457514227796,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"12:13","end":"13:13","startHours":12.217457514227796,"endHours":13.217457514227796,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"13:13","end":"14:13","startHours":13.217457514227796,"endHours":14.217457514227796,"planetary_lord":"Moon"},{"name":"Hora 8","start":"14:13","end":"15:13","startHours":14.217457514227796,"endHours":15.217457514227796,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"15:13","end":"16:13","startHours":15.217457514227796,"endHours":16.217457514227796,"planetary_lord":"Venus"},{"name":"Hora 10","start":"16:13","end":"17:13","startHours":16.217457514227796,"endHours":17.217457514227796,"planetary_lord":"Sun"},{"name":"Hora 11","start":"17:13","end":"18:13","startHours":17.217457514227796,"endHours":18.217457514227796,"planetary_lord":"Mars"},{"name":"Hora 12","start":"18:13","end":"19:13","startHours":18.217457514227796,"endHours":19.217457514227796,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"19:13","end":"20:13","startHours":19.217457514227796,"endHours":20.217457514227796,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"20:13","end":"21:13","startHours":20.217457514227796,"endHours":21.217457514227796,"planetary_lord":"Moon"},{"name":"Hora 15","start":"21:13","end":"22:13","startHours":21.217457514227796,"endHours":22.217457514227796,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"22:13","end":"23:13","startHours":22.217457514227796,"endHours":23.217457514227796,"planetary_lord":"Venus"},{"name":"Hora 17","start":"23:13","end":"00:13","startHours":23.217457514227796,"endHours":24.217457514227796,"planetary_lord":"Sun"},{"name":"Hora 18","start":"00:13","end":"01:13","startHours":24.217457514227796,"endHours":25.217457514227796,"planetary_lord":"Mars"},{"name":"Hora 19","start":"01:13","end":"02:13","startHours":25.217457514227796,"endHours":26.217457514227796,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"02:13","end":"03:13","startHours":26.217457514227796,"endHours":27.217457514227796,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"03:13","end":"04:13","startHours":27.217457514227796,"endHours":28.217457514227796,"planetary_lord":"Moon"},{"name":"Hora 22","start":"04:13","end":"05:13","startHours":28.217457514227796,"endHours":29.217457514227796,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"05:13","end":"06:13","startHours":29.217457514227796,"endHours":30.217457514227796,"planetary_lord":"Venus"},{"name":"Hora 24","start":"06:13","end":"07:13","startHours":30.217457514227796,"endHours":31.217457514227796,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Karka","Kanyā","Dhanu","Makara"],"unfavorable_rashis":["Mithuna","Siṃha","Tulā","Vṛścika","Kumbha","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"South-West","rahuVasa":"South-West","anandadiYoga":{"name":"Śubha","quality":"Auspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-17.439772389696262,"eotMinutes":-13.52958854184206,"ayanamsa":24.1056}},"calendars":{"vikram_samvat":2075,"vikram_samvatsara":"Virodhakṛt","saka_samvat":1940,"saka_samvatsara":"Vilambī","bengali_samvat":1425,"malayalam_era":1194,"nanakshahi_year":549,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Pūrṇimā · Vikram 2075 Virodhakṛt · Śaka 1940 Vilambī"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"magha-purnima","name":"Māghī Pūrṇimā","name_sanskrit":"माघी पूर्णिमा","tradition":"Pan-Hindu","significance":"Sacred snāna at Prayāga; Māgha-snāna culmination.","vrata":true,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Māgha"},"precedence":2},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2}],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Śukla Pūrṇimā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Śukla Pūrṇimā","url":"/day/-0562-04-11","relevance":0.5}]},"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 January 31, 2018 CE · Thane, Maharashtra · Vidhyamitra","description":"January 31, 2018 CE for Thane, Maharashtra: Śukla Pūrṇimā, sūryodaya 07:13, sūryāsta 18:30.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/thane/2018-01-31","hreflang_alternates":{"en":"https://vidhyamitra.com/city/thane/2018-01-31","sa":"https://sa.vidhyamitra.com/city/thane/2018-01-31","hi":"https://hi.vidhyamitra.com/city/thane/2018-01-31","x-default":"https://vidhyamitra.com/city/thane/2018-01-31"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T01:32:15.513Z","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":"2026-05-15T01:32:15.513Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T01:32:15.513Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}