{"id":"vidhyamitra:city-day:boston:2016-01-16:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/boston/2016-01-16","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2016-01-16","date_display":"January 16, 2016 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":2016,"month":1,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2457403.770833,"kali_year":5117,"ahargana":1868938.2708,"sun":{"sidereal_longitude":271.0983,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":347.8822,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":76.7839,"elapsed_within_tithi_degrees":4.7839},"nakshatra":{"number":27,"name":"Revatī","pada":1,"moon_longitude":347.8822,"elapsed_within_degrees":1.2155},"yoga":{"number":20,"name":"Śiva","sum_longitude":258.9804},"karana":{"half_tithi_index":12,"name":"Gara"},"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":2016,"month":1,"day":16,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2457403.770833,"ahargana":1868938.2708,"kali_year":5117,"ayanamsa_lahiri":24.0771,"grahas":{"sun":{"sidereal_longitude":271.245762,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":348.950062,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":false,"latitude":-1.0285},"mars":{"sidereal_longitude":192.42816200000004,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":267.564762,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":true},"jupiter":{"sidereal_longitude":148.33486200000004,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":true},"venus":{"sidereal_longitude":236.09536200000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":228.39996199999996,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":154.6565,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":334.6565,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","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":2016,"month":1,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2457403.770833,"kali_year":5117,"ahargana":1868938.2708,"sun":{"sidereal_longitude":271.0983,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":347.8822,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":76.7839,"elapsed_within_tithi_degrees":4.7839},"nakshatra":{"number":27,"name":"Revatī","pada":1,"moon_longitude":347.8822,"elapsed_within_degrees":1.2155},"yoga":{"number":20,"name":"Śiva","sum_longitude":258.9804},"karana":{"half_tithi_index":12,"name":"Gara"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.029,"elongation":76.784},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.029,"opposition_distance":103.216}},"eclipse_window_40days":[]},"city":{"slug":"boston","name":"Boston, USA","lat":42.3601,"lon":-71.0589,"tz_offset_hours":-5,"country":"US","tier":"diaspora"},"tier2":{"city":{"slug":"boston","name":"Boston, USA","lat":42.3601,"lon":-71.0589,"tz_offset_hours":-5,"country":"US","tier":"diaspora"},"sunriseLocal":"07:11","sunsetLocal":"16:37","solarNoonLocal":"11:54","dayLengthHours":9.428982550713307,"dayLengthDisplay":"9 Hours 25 Mins 44 Secs","nightLengthDisplay":"14 Hours 34 Mins 16 Secs","moonriseLocal":"10:43","moonsetLocal":"23:27","rahuKala":{"name":"Rāhu Kāla","start":"09:32","end":"10:43","startHours":9.541562721351301,"endHours":10.720185540190464,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:05","end":"14:15","startHours":13.07743117786879,"endHours":14.256053996707955,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:11","end":"08:22","startHours":7.1843170836729735,"endHours":8.362939902512137,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:23","end":"09:42","startHours":9.384413012172745,"endHours":9.698712430529856,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:35","end":"07:50","startHours":7.577191356619362,"endHours":7.82863089130505,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:35","end":"12:13","startHours":11.584508940672515,"endHours":12.213107777386737,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:56","end":"06:33","startHours":5.927119410244533,"endHours":6.555718246958753,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:24","end":"07:11","startHours":6.398568537780198,"endHours":7.1843170836729735,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:28","end":"14:06","startHours":13.470305450815179,"endHours":14.098904287529399,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"16:25","end":"16:49","startHours":16.41329963438628,"endHours":16.81329963438628,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"16:37","end":"17:00","startHours":16.61329963438628,"endHours":17.006173907332666,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"16:22","end":"18:07","startHours":16.36329963438628,"endHours":18.11329963438628,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:35","end":"00:13","startHours":23.584508940672517,"endHours":24.213107777386735,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"07:11","end":"08:22","startHours":7.1843170836729735,"endHours":8.362939902512137,"quality":"inauspicious"},{"name":"Śubha","start":"08:22","end":"09:32","startHours":8.362939902512137,"endHours":9.541562721351301,"quality":"auspicious"},{"name":"Roga","start":"09:32","end":"10:43","startHours":9.541562721351301,"endHours":10.720185540190464,"quality":"inauspicious"},{"name":"Udveg","start":"10:43","end":"11:54","startHours":10.720185540190464,"endHours":11.898808359029626,"quality":"inauspicious"},{"name":"Chala","start":"11:54","end":"13:05","startHours":11.898808359029626,"endHours":13.07743117786879,"quality":"neutral"},{"name":"Labha","start":"13:05","end":"14:15","startHours":13.07743117786879,"endHours":14.256053996707955,"quality":"auspicious"},{"name":"Amṛta","start":"14:15","end":"15:26","startHours":14.256053996707955,"endHours":15.434676815547117,"quality":"auspicious"},{"name":"Kāla","start":"15:26","end":"16:37","startHours":15.434676815547117,"endHours":16.61329963438628,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"16:37","end":"18:26","startHours":16.61329963438628,"endHours":18.434676815547117,"quality":"auspicious"},{"name":"Amṛta","start":"18:26","end":"20:15","startHours":18.434676815547117,"endHours":20.256053996707955,"quality":"auspicious"},{"name":"Kāla","start":"20:15","end":"22:05","startHours":20.256053996707955,"endHours":22.07743117786879,"quality":"inauspicious"},{"name":"Śubha","start":"22:05","end":"23:54","startHours":22.07743117786879,"endHours":23.898808359029626,"quality":"auspicious"},{"name":"Roga","start":"23:54","end":"01:43","startHours":23.898808359029626,"endHours":25.720185540190464,"quality":"inauspicious"},{"name":"Udveg","start":"01:43","end":"03:32","startHours":25.720185540190464,"endHours":27.541562721351298,"quality":"inauspicious"},{"name":"Chala","start":"03:32","end":"05:22","startHours":27.541562721351298,"endHours":29.362939902512135,"quality":"neutral"},{"name":"Labha","start":"05:22","end":"07:11","startHours":29.362939902512135,"endHours":31.184317083672973,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:11","end":"08:11","startHours":7.1843170836729735,"endHours":8.184317083672973,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"08:11","end":"09:11","startHours":8.184317083672973,"endHours":9.184317083672973,"planetary_lord":"Moon"},{"name":"Hora 3","start":"09:11","end":"10:11","startHours":9.184317083672973,"endHours":10.184317083672973,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"10:11","end":"11:11","startHours":10.184317083672973,"endHours":11.184317083672973,"planetary_lord":"Venus"},{"name":"Hora 5","start":"11:11","end":"12:11","startHours":11.184317083672973,"endHours":12.184317083672973,"planetary_lord":"Sun"},{"name":"Hora 6","start":"12:11","end":"13:11","startHours":12.184317083672973,"endHours":13.184317083672973,"planetary_lord":"Mars"},{"name":"Hora 7","start":"13:11","end":"14:11","startHours":13.184317083672973,"endHours":14.184317083672973,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"14:11","end":"15:11","startHours":14.184317083672973,"endHours":15.184317083672973,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"15:11","end":"16:11","startHours":15.184317083672973,"endHours":16.184317083672973,"planetary_lord":"Moon"},{"name":"Hora 10","start":"16:11","end":"17:11","startHours":16.184317083672973,"endHours":17.184317083672973,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"17:11","end":"18:11","startHours":17.184317083672973,"endHours":18.184317083672973,"planetary_lord":"Venus"},{"name":"Hora 12","start":"18:11","end":"19:11","startHours":18.184317083672973,"endHours":19.184317083672973,"planetary_lord":"Sun"},{"name":"Hora 13","start":"19:11","end":"20:11","startHours":19.184317083672973,"endHours":20.184317083672973,"planetary_lord":"Mars"},{"name":"Hora 14","start":"20:11","end":"21:11","startHours":20.184317083672973,"endHours":21.184317083672973,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"21:11","end":"22:11","startHours":21.184317083672973,"endHours":22.184317083672973,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"22:11","end":"23:11","startHours":22.184317083672973,"endHours":23.184317083672973,"planetary_lord":"Moon"},{"name":"Hora 17","start":"23:11","end":"00:11","startHours":23.184317083672973,"endHours":24.184317083672973,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"00:11","end":"01:11","startHours":24.184317083672973,"endHours":25.184317083672973,"planetary_lord":"Venus"},{"name":"Hora 19","start":"01:11","end":"02:11","startHours":25.184317083672973,"endHours":26.184317083672973,"planetary_lord":"Sun"},{"name":"Hora 20","start":"02:11","end":"03:11","startHours":26.184317083672973,"endHours":27.184317083672973,"planetary_lord":"Mars"},{"name":"Hora 21","start":"03:11","end":"04:11","startHours":27.184317083672973,"endHours":28.184317083672973,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"04:11","end":"05:11","startHours":28.184317083672973,"endHours":29.184317083672973,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"05:11","end":"06:11","startHours":29.184317083672973,"endHours":30.184317083672973,"planetary_lord":"Moon"},{"name":"Hora 24","start":"06:11","end":"07:11","startHours":30.184317083672973,"endHours":31.184317083672973,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-West","rahuVasa":"East","anandadiYoga":{"name":"Gada","quality":"Inauspicious"},"drikRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-21.070421266325038,"eotMinutes":-9.692901541777706,"ayanamsa":24.0771}},"calendars":{"vikram_samvat":2073,"vikram_samvatsara":"Saumya","saka_samvat":1938,"saka_samvatsara":"Durmukhi","bengali_samvat":1423,"malayalam_era":1192,"nanakshahi_year":547,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Saptamī · Vikram 2073 Saumya · Śaka 1938 Durmukhi"},"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":"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":"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":"boston"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 16, 2016 CE · Boston, USA · Vidhyamitra","description":"January 16, 2016 CE for Boston, USA: Śukla Saptamī, sūryodaya 07:11, sūryāsta 16:37.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/boston/2016-01-16","hreflang_alternates":{"en":"https://vidhyamitra.com/city/boston/2016-01-16","sa":"https://sa.vidhyamitra.com/city/boston/2016-01-16","hi":"https://hi.vidhyamitra.com/city/boston/2016-01-16","x-default":"https://vidhyamitra.com/city/boston/2016-01-16"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T16:31:08.384Z","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":"2026-05-15T16:31:08.384Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T16:31:08.384Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}