{"id":"vidhyamitra:city-day:boston:2026-10-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/boston/2026-10-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2026-10-04","date_display":"October 4, 2026 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":2026,"month":10,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2461317.770833,"kali_year":5128,"ahargana":1872852.2708,"sun":{"sidereal_longitude":165.8003,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":81.4863,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":23,"name":"Aṣṭamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Aṣṭamī","elongation_degrees":275.686,"elapsed_within_tithi_degrees":11.686},"nakshatra":{"number":7,"name":"Punarvasu","pada":1,"moon_longitude":81.4863,"elapsed_within_degrees":1.4863},"yoga":{"number":19,"name":"Parigha","sum_longitude":247.2866},"karana":{"half_tithi_index":45,"name":"Kaulava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":2026,"month":10,"day":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2461317.770833,"ahargana":1872852.2708,"kali_year":5128,"ayanamsa_lahiri":24.2268,"grahas":{"sun":{"sidereal_longitude":166.61021900000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"moon":{"sidereal_longitude":82.96931899999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false,"latitude":3.2238},"mars":{"sidereal_longitude":98.88721900000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":190.03141900000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":115.69091900000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":194.00421900000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":true},"saturn":{"sidereal_longitude":347.153319,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":307.2739,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":127.2739,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"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":2026,"month":10,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2461317.770833,"kali_year":5128,"ahargana":1872852.2708,"sun":{"sidereal_longitude":165.8003,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":81.4863,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":23,"name":"Aṣṭamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Aṣṭamī","elongation_degrees":275.686,"elapsed_within_tithi_degrees":11.686},"nakshatra":{"number":7,"name":"Punarvasu","pada":1,"moon_longitude":81.4863,"elapsed_within_degrees":1.4863},"yoga":{"number":19,"name":"Parigha","sum_longitude":247.2866},"karana":{"half_tithi_index":45,"name":"Kaulava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.224,"elongation":84.314},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.224,"opposition_distance":95.686}},"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":"05:43","sunsetLocal":"17:21","solarNoonLocal":"11:32","dayLengthHours":11.628196922725586,"dayLengthDisplay":"11 Hours 37 Mins 42 Secs","nightLengthDisplay":"12 Hours 22 Mins 18 Secs","moonriseLocal":"22:26","moonsetLocal":"13:29","rahuKala":{"name":"Rāhu Kāla","start":"15:54","end":"17:21","startHours":15.896216126227259,"endHours":17.349740741567956,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:32","end":"12:59","startHours":11.535642280205163,"endHours":12.989166895545862,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:27","end":"15:54","startHours":14.442691510886561,"endHours":15.896216126227259,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:26","end":"08:49","startHours":8.43478976747834,"endHours":8.822396331569195,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:12","end":"06:31","startHours":6.206052023955937,"endHours":6.51613727522862,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:09","end":"11:55","startHours":11.148035716114311,"endHours":11.923248844296015,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:10","end":"04:57","startHours":4.17111756247896,"endHours":4.946330690660665,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:45","end":"05:43","startHours":4.752527408615239,"endHours":5.721543818842371,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:28","end":"14:15","startHours":13.473675100659428,"endHours":14.248888228841134,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:09","end":"17:33","startHours":17.149740741567957,"endHours":17.549740741567955,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:21","end":"17:50","startHours":17.349740741567956,"endHours":17.834248946681523,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:06","end":"18:51","startHours":17.099740741567956,"endHours":18.849740741567956,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:09","end":"23:55","startHours":23.14803571611431,"endHours":23.923248844296015,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:43","end":"07:11","startHours":5.721543818842371,"endHours":7.1750684341830695,"quality":"inauspicious"},{"name":"Chala","start":"07:11","end":"08:38","startHours":7.1750684341830695,"endHours":8.628593049523769,"quality":"neutral"},{"name":"Labha","start":"08:38","end":"10:05","startHours":8.628593049523769,"endHours":10.082117664864466,"quality":"auspicious"},{"name":"Amṛta","start":"10:05","end":"11:32","startHours":10.082117664864466,"endHours":11.535642280205163,"quality":"auspicious"},{"name":"Kāla","start":"11:32","end":"12:59","startHours":11.535642280205163,"endHours":12.989166895545862,"quality":"inauspicious"},{"name":"Śubha","start":"12:59","end":"14:27","startHours":12.989166895545862,"endHours":14.442691510886561,"quality":"auspicious"},{"name":"Roga","start":"14:27","end":"15:54","startHours":14.442691510886561,"endHours":15.896216126227259,"quality":"inauspicious"},{"name":"Udveg","start":"15:54","end":"17:21","startHours":15.896216126227259,"endHours":17.349740741567956,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"17:21","end":"18:54","startHours":17.349740741567956,"endHours":18.89621612622726,"quality":"auspicious"},{"name":"Roga","start":"18:54","end":"20:27","startHours":18.89621612622726,"endHours":20.44269151088656,"quality":"inauspicious"},{"name":"Udveg","start":"20:27","end":"21:59","startHours":20.44269151088656,"endHours":21.98916689554586,"quality":"inauspicious"},{"name":"Chala","start":"21:59","end":"23:32","startHours":21.98916689554586,"endHours":23.535642280205163,"quality":"neutral"},{"name":"Labha","start":"23:32","end":"01:05","startHours":23.535642280205163,"endHours":25.082117664864466,"quality":"auspicious"},{"name":"Amṛta","start":"01:05","end":"02:38","startHours":25.082117664864466,"endHours":26.628593049523765,"quality":"auspicious"},{"name":"Kāla","start":"02:38","end":"04:11","startHours":26.628593049523765,"endHours":28.175068434183068,"quality":"inauspicious"},{"name":"Śubha","start":"04:11","end":"05:43","startHours":28.175068434183068,"endHours":29.72154381884237,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:43","end":"06:43","startHours":5.721543818842371,"endHours":6.721543818842371,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:43","end":"07:43","startHours":6.721543818842371,"endHours":7.721543818842371,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:43","end":"08:43","startHours":7.721543818842371,"endHours":8.72154381884237,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:43","end":"09:43","startHours":8.72154381884237,"endHours":9.72154381884237,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:43","end":"10:43","startHours":9.72154381884237,"endHours":10.72154381884237,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:43","end":"11:43","startHours":10.72154381884237,"endHours":11.72154381884237,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:43","end":"12:43","startHours":11.72154381884237,"endHours":12.72154381884237,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:43","end":"13:43","startHours":12.72154381884237,"endHours":13.72154381884237,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:43","end":"14:43","startHours":13.72154381884237,"endHours":14.72154381884237,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:43","end":"15:43","startHours":14.72154381884237,"endHours":15.72154381884237,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:43","end":"16:43","startHours":15.72154381884237,"endHours":16.72154381884237,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:43","end":"17:43","startHours":16.72154381884237,"endHours":17.72154381884237,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:43","end":"18:43","startHours":17.72154381884237,"endHours":18.72154381884237,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:43","end":"19:43","startHours":18.72154381884237,"endHours":19.72154381884237,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:43","end":"20:43","startHours":19.72154381884237,"endHours":20.72154381884237,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:43","end":"21:43","startHours":20.72154381884237,"endHours":21.72154381884237,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:43","end":"22:43","startHours":21.72154381884237,"endHours":22.72154381884237,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:43","end":"23:43","startHours":22.72154381884237,"endHours":23.72154381884237,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:43","end":"00:43","startHours":23.72154381884237,"endHours":24.72154381884237,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:43","end":"01:43","startHours":24.72154381884237,"endHours":25.72154381884237,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:43","end":"02:43","startHours":25.72154381884237,"endHours":26.72154381884237,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:43","end":"03:43","startHours":26.72154381884237,"endHours":27.72154381884237,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:43","end":"04:43","startHours":27.72154381884237,"endHours":28.72154381884237,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:43","end":"05:43","startHours":28.72154381884237,"endHours":29.72154381884237,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Dhvaja","quality":"Auspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-4.288584057525242,"eotMinutes":12.09706318769023,"ayanamsa":24.2268}},"calendars":{"vikram_samvat":2083,"vikram_samvatsara":"Siddhārthī","saka_samvat":1948,"saka_samvatsara":"Parābhava","bengali_samvat":1433,"malayalam_era":1202,"nanakshahi_year":557,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Bhādrapada","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Aṣṭamī · Vikram 2083 Siddhārthī · Śaka 1948 Parābhava"},"festivals":[],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — 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 October 4, 2026 CE · Boston, USA · Vidhyamitra","description":"October 4, 2026 CE for Boston, USA: Kṛṣṇa Aṣṭamī, sūryodaya 05:43, sūryāsta 17:21.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/boston/2026-10-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/boston/2026-10-04","sa":"https://sa.vidhyamitra.com/city/boston/2026-10-04","hi":"https://hi.vidhyamitra.com/city/boston/2026-10-04","x-default":"https://vidhyamitra.com/city/boston/2026-10-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-07-27T15:18:00.856Z","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":"2026-07-27T15:18:00.856Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-07-27T15:18:00.856Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"},"reader_local_antaryami":{"reader_geography":"Every reader enters from their own kṣetra anywhere on Bhūmi; no founder-city is the universal center.","purna_chain":["Goloka/Vraja Rādhā-Krishna","Vaikuṇṭha Lakṣmī-Nārāyaṇa","Mahāviṣṇu/Kāraṇodakaśāyī Viṣṇu","Garbhodakaśāyī Viṣṇu","Brahmā","Kṣīrodaka Paramātmā/Antaryāmī (Kṣīrodakaśāyī Viṣṇu)","Bhūmi","reader's own kṣetra anywhere on Bhūmi","exact reading kṣetra","Divyāṁśa-bhakta","chitta/vāṇī/aṅgulī","keyboard-silicon-pathways","Vidhyāmitra substrate","reader/seer","Krishna"],"antaryami_responsibility_formula":"Kṣīrodakaśāyī Viṣṇu = Paramātmā = Antaryāmī. Jīva desires. Prakṛti executes through guṇas. Paramātmā witnesses, permits, remembers, guides, and sustains. Bhagavān is the ultimate source.","source_anchors":[{"label":"BG 13.23","path":"/bhagavad-gita/13/23","meaning":"upadraṣṭā-anumantā · witness-permitter"},{"label":"BG 15.15","path":"/bhagavad-gita/15/15","meaning":"the Lord seated in every heart as memory, knowledge, and forgetting"},{"label":"BG 18.61","path":"/bhagavad-gita/18/61","meaning":"Īśvara seated in the heart of all beings"}],"nama_seal":"Hare Krishna Hare Krishna · Krishna Krishna Hare Hare · Hare Rama Hare Rama · Rama Rama Hare Hare"}}}