{"id":"vidhyamitra:city-day:boston:2013-04-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/boston/2013-04-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2013-04-04","date_display":"April 4, 2013 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":"Not independently benchmarked across the declared range","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2013,"month":4,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2456386.770833,"kali_year":5114,"ahargana":1867921.2708,"sun":{"sidereal_longitude":350.5286,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":270.6493,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":280.1207,"elapsed_within_tithi_degrees":4.1207},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2,"moon_longitude":270.6493,"elapsed_within_degrees":3.9827},"yoga":{"number":20,"name":"Śiva","sum_longitude":261.1779},"karana":{"half_tithi_index":46,"name":"Taitila"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":2013,"month":4,"day":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2456386.770833,"ahargana":1867921.2708,"kali_year":5114,"ayanamsa_lahiri":24.0382,"grahas":{"sun":{"sidereal_longitude":350.397819,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":271.399319,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false,"latitude":3.9763},"mars":{"sidereal_longitude":353.343019,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":322.672319,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":47.878619000000015,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3},"retrograde":false},"venus":{"sidereal_longitude":351.842019,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":195.68091900000002,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":208.542,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":28.542,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","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":"Not independently benchmarked across the declared range","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2013,"month":4,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2456386.770833,"kali_year":5114,"ahargana":1867921.2708,"sun":{"sidereal_longitude":350.5286,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":270.6493,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":280.1207,"elapsed_within_tithi_degrees":4.1207},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2,"moon_longitude":270.6493,"elapsed_within_degrees":3.9827},"yoga":{"number":20,"name":"Śiva","sum_longitude":261.1779},"karana":{"half_tithi_index":46,"name":"Taitila"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.976,"elongation":79.879},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.976,"opposition_distance":100.121}},"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":"05:22","sunsetLocal":"18:13","solarNoonLocal":"11:48","dayLengthHours":12.846911538369085,"dayLengthDisplay":"12 Hours 50 Mins 49 Secs","nightLengthDisplay":"11 Hours 09 Mins 11 Secs","moonriseLocal":"01:50","moonsetLocal":"11:13","rahuKala":{"name":"Rāhu Kāla","start":"13:24","end":"15:00","startHours":13.39985099394497,"endHours":15.005714936241105,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:22","end":"06:59","startHours":5.370531282464291,"endHours":6.976395224760426,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:35","end":"10:11","startHours":8.582259167056563,"endHours":10.188123109352698,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:22","end":"08:48","startHours":8.36814397475041,"endHours":8.796374359362714,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:54","end":"06:15","startHours":5.905819263229669,"endHours":6.248403570919511,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:22","end":"12:13","startHours":11.365756667036532,"endHours":12.222217436261136,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:39","end":"04:31","startHours":3.6576097440150797,"endHours":4.514070513239685,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:18","end":"05:22","startHours":4.299955320933534,"endHours":5.370531282464291,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:56","end":"14:47","startHours":13.935138974710348,"endHours":14.791599743934954,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:01","end":"18:25","startHours":18.017442820833377,"endHours":18.417442820833376,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:13","end":"18:45","startHours":18.217442820833377,"endHours":18.752730801598755,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:58","end":"19:43","startHours":17.967442820833377,"endHours":19.717442820833377,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:22","end":"00:13","startHours":23.365756667036532,"endHours":24.222217436261136,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:22","end":"06:59","startHours":5.370531282464291,"endHours":6.976395224760426,"quality":"auspicious"},{"name":"Roga","start":"06:59","end":"08:35","startHours":6.976395224760426,"endHours":8.582259167056563,"quality":"inauspicious"},{"name":"Udveg","start":"08:35","end":"10:11","startHours":8.582259167056563,"endHours":10.188123109352698,"quality":"inauspicious"},{"name":"Chala","start":"10:11","end":"11:48","startHours":10.188123109352698,"endHours":11.793987051648834,"quality":"neutral"},{"name":"Labha","start":"11:48","end":"13:24","startHours":11.793987051648834,"endHours":13.39985099394497,"quality":"auspicious"},{"name":"Amṛta","start":"13:24","end":"15:00","startHours":13.39985099394497,"endHours":15.005714936241105,"quality":"auspicious"},{"name":"Kāla","start":"15:00","end":"16:37","startHours":15.005714936241105,"endHours":16.61157887853724,"quality":"inauspicious"},{"name":"Śubha","start":"16:37","end":"18:13","startHours":16.61157887853724,"endHours":18.217442820833377,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:13","end":"19:37","startHours":18.217442820833377,"endHours":19.61157887853724,"quality":"auspicious"},{"name":"Kāla","start":"19:37","end":"21:00","startHours":19.61157887853724,"endHours":21.005714936241105,"quality":"inauspicious"},{"name":"Śubha","start":"21:00","end":"22:24","startHours":21.005714936241105,"endHours":22.39985099394497,"quality":"auspicious"},{"name":"Roga","start":"22:24","end":"23:48","startHours":22.39985099394497,"endHours":23.793987051648834,"quality":"inauspicious"},{"name":"Udveg","start":"23:48","end":"01:11","startHours":23.793987051648834,"endHours":25.1881231093527,"quality":"inauspicious"},{"name":"Chala","start":"01:11","end":"02:35","startHours":25.1881231093527,"endHours":26.582259167056563,"quality":"neutral"},{"name":"Labha","start":"02:35","end":"03:59","startHours":26.582259167056563,"endHours":27.976395224760427,"quality":"auspicious"},{"name":"Amṛta","start":"03:59","end":"05:22","startHours":27.976395224760427,"endHours":29.37053128246429,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:22","end":"06:22","startHours":5.370531282464291,"endHours":6.370531282464291,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:22","end":"07:22","startHours":6.370531282464291,"endHours":7.370531282464291,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:22","end":"08:22","startHours":7.370531282464291,"endHours":8.370531282464292,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:22","end":"09:22","startHours":8.370531282464292,"endHours":9.370531282464292,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:22","end":"10:22","startHours":9.370531282464292,"endHours":10.370531282464292,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:22","end":"11:22","startHours":10.370531282464292,"endHours":11.370531282464292,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:22","end":"12:22","startHours":11.370531282464292,"endHours":12.370531282464292,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:22","end":"13:22","startHours":12.370531282464292,"endHours":13.370531282464292,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:22","end":"14:22","startHours":13.370531282464292,"endHours":14.370531282464292,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:22","end":"15:22","startHours":14.370531282464292,"endHours":15.370531282464292,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:22","end":"16:22","startHours":15.370531282464292,"endHours":16.37053128246429,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:22","end":"17:22","startHours":16.37053128246429,"endHours":17.37053128246429,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:22","end":"18:22","startHours":17.37053128246429,"endHours":18.37053128246429,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:22","end":"19:22","startHours":18.37053128246429,"endHours":19.37053128246429,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:22","end":"20:22","startHours":19.37053128246429,"endHours":20.37053128246429,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:22","end":"21:22","startHours":20.37053128246429,"endHours":21.37053128246429,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:22","end":"22:22","startHours":21.37053128246429,"endHours":22.37053128246429,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:22","end":"23:22","startHours":22.37053128246429,"endHours":23.37053128246429,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:22","end":"00:22","startHours":23.37053128246429,"endHours":24.37053128246429,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:22","end":"01:22","startHours":24.37053128246429,"endHours":25.37053128246429,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:22","end":"02:22","startHours":25.37053128246429,"endHours":26.37053128246429,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:22","end":"03:22","startHours":26.37053128246429,"endHours":27.37053128246429,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:22","end":"04:22","startHours":27.37053128246429,"endHours":28.37053128246429,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:22","end":"05:22","startHours":28.37053128246429,"endHours":29.37053128246429,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South-East","rahuVasa":"North-West","anandadiYoga":{"name":"Vajra","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":5.690467679659284,"eotMinutes":-3.4036230989301703,"ayanamsa":24.0382}},"calendars":{"vikram_samvat":2070,"vikram_samvatsara":"Parābhava","saka_samvat":1935,"saka_samvatsara":"Vijaya","bengali_samvat":1420,"malayalam_era":1189,"nanakshahi_year":544,"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":"Mīna (Paṅkuṇi)","ritu":"Vasanta (Spring)","display_summary":"Caitra Kṛṣṇa Navamī · Vikram 2070 Parābhava · Śaka 1935 Vijaya"},"festivals":[],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — 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 April 4, 2013 CE · Boston, USA · Vidhyamitra","description":"April 4, 2013 CE for Boston, USA: Kṛṣṇa Navamī, sūryodaya 05:22, sūryāsta 18:13.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/boston/2013-04-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/boston/2013-04-04","sa":"https://sa.vidhyamitra.com/city/boston/2013-04-04","hi":"https://hi.vidhyamitra.com/city/boston/2013-04-04","x-default":"https://vidhyamitra.com/city/boston/2013-04-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-08-10T12:51:35.689Z","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":"2026-08-10T12:51:35.689Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-08-10T12:51:35.689Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"},"reader_local_antaryami":{"reader_geography":"Every reader enters from their own kṣetra anywhere on Bhūmi; no single 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","reader-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"}}}