{"id":"vidhyamitra:city-day:boston:2012-01-30:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/boston/2012-01-30","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2012-01-30","date_display":"January 30, 2012 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":2012,"month":1,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455956.770833,"kali_year":5113,"ahargana":1867491.2708,"sun":{"sidereal_longitude":285.4842,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":4.3385,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":78.8542,"elapsed_within_tithi_degrees":6.8542},"nakshatra":{"number":1,"name":"Aśvinī","pada":2,"moon_longitude":4.3385,"elapsed_within_degrees":4.3385},"yoga":{"number":22,"name":"Sādhya","sum_longitude":289.8227},"karana":{"half_tithi_index":13,"name":"Vaṇija"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":2012,"month":1,"day":30,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2455956.770833,"ahargana":1867491.2708,"kali_year":5113,"ayanamsa_lahiri":24.0217,"grahas":{"sun":{"sidereal_longitude":285.514048,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"moon":{"sidereal_longitude":3.3015480000000252,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false,"latitude":3.2888},"mars":{"sidereal_longitude":148.62924799999996,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":279.628748,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":8.226047999999992,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false},"venus":{"sidereal_longitude":324.870048,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":185.16244800000004,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":231.3255,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":51.3255,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4},"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":2012,"month":1,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455956.770833,"kali_year":5113,"ahargana":1867491.2708,"sun":{"sidereal_longitude":285.4842,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":4.3385,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":78.8542,"elapsed_within_tithi_degrees":6.8542},"nakshatra":{"number":1,"name":"Aśvinī","pada":2,"moon_longitude":4.3385,"elapsed_within_degrees":4.3385},"yoga":{"number":22,"name":"Sādhya","sum_longitude":289.8227},"karana":{"half_tithi_index":13,"name":"Vaṇija"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.289,"elongation":78.854},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.289,"opposition_distance":101.146}},"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":"07:01","sunsetLocal":"16:54","solarNoonLocal":"11:58","dayLengthHours":9.886044267706296,"dayLengthDisplay":"9 Hours 53 Mins 10 Secs","nightLengthDisplay":"14 Hours 06 Mins 50 Secs","moonriseLocal":"10:26","moonsetLocal":"23:51","rahuKala":{"name":"Rāhu Kāla","start":"08:15","end":"09:29","startHours":8.252612499206212,"endHours":9.488368032669499,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:43","end":"11:58","startHours":10.724123566132786,"endHours":11.959879099596073,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:12","end":"14:26","startHours":13.19563463305936,"endHours":14.431390166522647,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:19","end":"09:39","startHours":9.323600628207728,"endHours":9.65313543713127,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:26","end":"07:42","startHours":7.428775476897354,"endHours":7.692403324036189,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:38","end":"12:17","startHours":11.630344290672529,"endHours":12.289413908519617,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:42","end":"06:21","startHours":5.698717730048752,"endHours":6.357787347895839,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:12","end":"07:01","startHours":6.193019943434067,"endHours":7.016856965742925,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:36","end":"14:16","startHours":13.607553144213789,"endHours":14.266622762060875,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"16:42","end":"17:06","startHours":16.70290123344922,"endHours":17.10290123344922,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"16:54","end":"17:19","startHours":16.90290123344922,"endHours":17.31481974460365,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"16:39","end":"18:24","startHours":16.65290123344922,"endHours":18.40290123344922,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:38","end":"00:17","startHours":23.63034429067253,"endHours":24.289413908519617,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"07:01","end":"08:15","startHours":7.016856965742925,"endHours":8.252612499206212,"quality":"auspicious"},{"name":"Kāla","start":"08:15","end":"09:29","startHours":8.252612499206212,"endHours":9.488368032669499,"quality":"inauspicious"},{"name":"Śubha","start":"09:29","end":"10:43","startHours":9.488368032669499,"endHours":10.724123566132786,"quality":"auspicious"},{"name":"Roga","start":"10:43","end":"11:58","startHours":10.724123566132786,"endHours":11.959879099596073,"quality":"inauspicious"},{"name":"Udveg","start":"11:58","end":"13:12","startHours":11.959879099596073,"endHours":13.19563463305936,"quality":"inauspicious"},{"name":"Chala","start":"13:12","end":"14:26","startHours":13.19563463305936,"endHours":14.431390166522647,"quality":"neutral"},{"name":"Labha","start":"14:26","end":"15:40","startHours":14.431390166522647,"endHours":15.667145699985934,"quality":"auspicious"},{"name":"Amṛta","start":"15:40","end":"16:54","startHours":15.667145699985934,"endHours":16.90290123344922,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"16:54","end":"18:40","startHours":16.90290123344922,"endHours":18.667145699985934,"quality":"neutral"},{"name":"Labha","start":"18:40","end":"20:26","startHours":18.667145699985934,"endHours":20.431390166522647,"quality":"auspicious"},{"name":"Amṛta","start":"20:26","end":"22:12","startHours":20.431390166522647,"endHours":22.19563463305936,"quality":"auspicious"},{"name":"Kāla","start":"22:12","end":"23:58","startHours":22.19563463305936,"endHours":23.959879099596073,"quality":"inauspicious"},{"name":"Śubha","start":"23:58","end":"01:43","startHours":23.959879099596073,"endHours":25.724123566132786,"quality":"auspicious"},{"name":"Roga","start":"01:43","end":"03:29","startHours":25.724123566132786,"endHours":27.4883680326695,"quality":"inauspicious"},{"name":"Udveg","start":"03:29","end":"05:15","startHours":27.4883680326695,"endHours":29.25261249920621,"quality":"inauspicious"},{"name":"Chala","start":"05:15","end":"07:01","startHours":29.25261249920621,"endHours":31.016856965742925,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"07:01","end":"08:01","startHours":7.016856965742925,"endHours":8.016856965742925,"planetary_lord":"Moon"},{"name":"Hora 2","start":"08:01","end":"09:01","startHours":8.016856965742925,"endHours":9.016856965742925,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"09:01","end":"10:01","startHours":9.016856965742925,"endHours":10.016856965742925,"planetary_lord":"Venus"},{"name":"Hora 4","start":"10:01","end":"11:01","startHours":10.016856965742925,"endHours":11.016856965742925,"planetary_lord":"Sun"},{"name":"Hora 5","start":"11:01","end":"12:01","startHours":11.016856965742925,"endHours":12.016856965742925,"planetary_lord":"Mars"},{"name":"Hora 6","start":"12:01","end":"13:01","startHours":12.016856965742925,"endHours":13.016856965742925,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"13:01","end":"14:01","startHours":13.016856965742925,"endHours":14.016856965742925,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"14:01","end":"15:01","startHours":14.016856965742925,"endHours":15.016856965742925,"planetary_lord":"Moon"},{"name":"Hora 9","start":"15:01","end":"16:01","startHours":15.016856965742925,"endHours":16.016856965742925,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"16:01","end":"17:01","startHours":16.016856965742925,"endHours":17.016856965742925,"planetary_lord":"Venus"},{"name":"Hora 11","start":"17:01","end":"18:01","startHours":17.016856965742925,"endHours":18.016856965742925,"planetary_lord":"Sun"},{"name":"Hora 12","start":"18:01","end":"19:01","startHours":18.016856965742925,"endHours":19.016856965742925,"planetary_lord":"Mars"},{"name":"Hora 13","start":"19:01","end":"20:01","startHours":19.016856965742925,"endHours":20.016856965742925,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"20:01","end":"21:01","startHours":20.016856965742925,"endHours":21.016856965742925,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"21:01","end":"22:01","startHours":21.016856965742925,"endHours":22.016856965742925,"planetary_lord":"Moon"},{"name":"Hora 16","start":"22:01","end":"23:01","startHours":22.016856965742925,"endHours":23.016856965742925,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"23:01","end":"00:01","startHours":23.016856965742925,"endHours":24.016856965742925,"planetary_lord":"Venus"},{"name":"Hora 18","start":"00:01","end":"01:01","startHours":24.016856965742925,"endHours":25.016856965742925,"planetary_lord":"Sun"},{"name":"Hora 19","start":"01:01","end":"02:01","startHours":25.016856965742925,"endHours":26.016856965742925,"planetary_lord":"Mars"},{"name":"Hora 20","start":"02:01","end":"03:01","startHours":26.016856965742925,"endHours":27.016856965742925,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"03:01","end":"04:01","startHours":27.016856965742925,"endHours":28.016856965742925,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"04:01","end":"05:01","startHours":28.016856965742925,"endHours":29.016856965742925,"planetary_lord":"Moon"},{"name":"Hora 23","start":"05:01","end":"06:01","startHours":29.016856965742925,"endHours":30.016856965742925,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"06:01","end":"07:01","startHours":30.016856965742925,"endHours":31.016856965742925,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"East","rahuVasa":"North-East","anandadiYoga":{"name":"Saumya","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-17.863011983888747,"eotMinutes":-13.357145975764517,"ayanamsa":24.0217}},"calendars":{"vikram_samvat":2069,"vikram_samvatsara":"Viśvāvasu","saka_samvat":1934,"saka_samvatsara":"Nandana","bengali_samvat":1419,"malayalam_era":1188,"nanakshahi_year":543,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Māgha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Saptamī · Vikram 2069 Viśvāvasu · Śaka 1934 Nandana"},"festivals":[],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3101-02-18","event":"Kali Yuga Epoch","chart_id":"kali-yuga-epoch","shared_marker":"same Aśvinī","url":"/day/-3101-02-18","relevance":0.5}]},"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 30, 2012 CE · Boston, USA · Vidhyamitra","description":"January 30, 2012 CE for Boston, USA: Śukla Saptamī, sūryodaya 07:01, sūryāsta 16:54.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/boston/2012-01-30","hreflang_alternates":{"en":"https://vidhyamitra.com/city/boston/2012-01-30","sa":"https://sa.vidhyamitra.com/city/boston/2012-01-30","hi":"https://hi.vidhyamitra.com/city/boston/2012-01-30","x-default":"https://vidhyamitra.com/city/boston/2012-01-30"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T14:34:41.053Z","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":"2026-05-31T14:34:41.053Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T14:34:41.053Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}