{"id":"vidhyamitra:city-day:bhavnagar:1981-06-15:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/bhavnagar/1981-06-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-06-15","date_display":"June 15, 1981 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":1981,"month":6,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444770.770833,"kali_year":5083,"ahargana":1856305.2708,"sun":{"sidereal_longitude":60.0919,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":210.2938,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":150.2018,"elapsed_within_tithi_degrees":6.2018},"nakshatra":{"number":16,"name":"Viśākhā","pada":4,"moon_longitude":210.2938,"elapsed_within_degrees":10.2938},"yoga":{"number":21,"name":"Siddha","sum_longitude":270.3857},"karana":{"half_tithi_index":25,"name":"Taitila"},"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":1981,"month":6,"day":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444770.770833,"ahargana":1856305.2708,"kali_year":5083,"ayanamsa_lahiri":23.5939,"grahas":{"sun":{"sidereal_longitude":60.271735999999976,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":211.665036,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false,"latitude":4.3192},"mars":{"sidereal_longitude":43.617636000000005,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":70.842736,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":157.56063600000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"venus":{"sidereal_longitude":78.63683600000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":159.22763600000008,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":104.0136,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":284.0136,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"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":1981,"month":6,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444770.770833,"kali_year":5083,"ahargana":1856305.2708,"sun":{"sidereal_longitude":60.0919,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":210.2938,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":150.2018,"elapsed_within_tithi_degrees":6.2018},"nakshatra":{"number":16,"name":"Viśākhā","pada":4,"moon_longitude":210.2938,"elapsed_within_degrees":10.2938},"yoga":{"number":21,"name":"Siddha","sum_longitude":270.3857},"karana":{"half_tithi_index":25,"name":"Taitila"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.319,"elongation":150.202},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.319,"opposition_distance":29.798}},"eclipse_window_40days":[]},"city":{"slug":"bhavnagar","name":"Bhavnagar, Gujarat","lat":21.7645,"lon":72.1519,"tz_offset_hours":5.5,"state":"Gujarat","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"bhavnagar","name":"Bhavnagar, Gujarat","lat":21.7645,"lon":72.1519,"tz_offset_hours":5.5,"state":"Gujarat","country":"IN","tier":"tier-1"},"sunriseLocal":"05:58","sunsetLocal":"19:25","solarNoonLocal":"12:42","dayLengthHours":13.452140418097542,"dayLengthDisplay":"13 Hours 27 Mins 08 Secs","nightLengthDisplay":"10 Hours 32 Mins 52 Secs","moonriseLocal":"17:16","moonsetLocal":"04:18","rahuKala":{"name":"Rāhu Kāla","start":"07:39","end":"09:20","startHours":7.648528292635611,"endHours":9.330045844897803,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:01","end":"12:42","startHours":11.011563397159996,"endHours":12.693080949422189,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:22","end":"16:03","startHours":14.374598501684382,"endHours":16.056116053946575,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:06","end":"09:33","startHours":9.105843504596177,"endHours":9.554248185199429,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:32","end":"06:53","startHours":6.527516591127482,"endHours":6.886240335610084,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:15","end":"13:08","startHours":12.244676268818937,"endHours":13.141485630025441,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:10","end":"05:04","startHours":4.1733920179604125,"endHours":5.070201379166915,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:51","end":"05:58","startHours":4.84599903886529,"endHours":5.967010740373418,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:56","end":"15:50","startHours":14.935104352438445,"endHours":15.831913713644948,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:13","end":"19:37","startHours":19.21915115847096,"endHours":19.61915115847096,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:25","end":"19:59","startHours":19.41915115847096,"endHours":19.979657009225026,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:10","end":"20:55","startHours":19.16915115847096,"endHours":20.91915115847096,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:15","end":"01:08","startHours":24.24467626881894,"endHours":25.14148563002544,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:58","end":"07:39","startHours":5.967010740373418,"endHours":7.648528292635611,"quality":"auspicious"},{"name":"Kāla","start":"07:39","end":"09:20","startHours":7.648528292635611,"endHours":9.330045844897803,"quality":"inauspicious"},{"name":"Śubha","start":"09:20","end":"11:01","startHours":9.330045844897803,"endHours":11.011563397159996,"quality":"auspicious"},{"name":"Roga","start":"11:01","end":"12:42","startHours":11.011563397159996,"endHours":12.693080949422189,"quality":"inauspicious"},{"name":"Udveg","start":"12:42","end":"14:22","startHours":12.693080949422189,"endHours":14.374598501684382,"quality":"inauspicious"},{"name":"Chala","start":"14:22","end":"16:03","startHours":14.374598501684382,"endHours":16.056116053946575,"quality":"neutral"},{"name":"Labha","start":"16:03","end":"17:44","startHours":16.056116053946575,"endHours":17.737633606208767,"quality":"auspicious"},{"name":"Amṛta","start":"17:44","end":"19:25","startHours":17.737633606208767,"endHours":19.41915115847096,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"19:25","end":"20:44","startHours":19.41915115847096,"endHours":20.737633606208767,"quality":"neutral"},{"name":"Labha","start":"20:44","end":"22:03","startHours":20.737633606208767,"endHours":22.056116053946575,"quality":"auspicious"},{"name":"Amṛta","start":"22:03","end":"23:22","startHours":22.056116053946575,"endHours":23.374598501684382,"quality":"auspicious"},{"name":"Kāla","start":"23:22","end":"00:42","startHours":23.374598501684382,"endHours":24.69308094942219,"quality":"inauspicious"},{"name":"Śubha","start":"00:42","end":"02:01","startHours":24.69308094942219,"endHours":26.011563397159996,"quality":"auspicious"},{"name":"Roga","start":"02:01","end":"03:20","startHours":26.011563397159996,"endHours":27.330045844897803,"quality":"inauspicious"},{"name":"Udveg","start":"03:20","end":"04:39","startHours":27.330045844897803,"endHours":28.64852829263561,"quality":"inauspicious"},{"name":"Chala","start":"04:39","end":"05:58","startHours":28.64852829263561,"endHours":29.967010740373418,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:58","end":"06:58","startHours":5.967010740373418,"endHours":6.967010740373418,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:58","end":"07:58","startHours":6.967010740373418,"endHours":7.967010740373418,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:58","end":"08:58","startHours":7.967010740373418,"endHours":8.967010740373418,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:58","end":"09:58","startHours":8.967010740373418,"endHours":9.967010740373418,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:58","end":"10:58","startHours":9.967010740373418,"endHours":10.967010740373418,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:58","end":"11:58","startHours":10.967010740373418,"endHours":11.967010740373418,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:58","end":"12:58","startHours":11.967010740373418,"endHours":12.967010740373418,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:58","end":"13:58","startHours":12.967010740373418,"endHours":13.967010740373418,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:58","end":"14:58","startHours":13.967010740373418,"endHours":14.967010740373418,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:58","end":"15:58","startHours":14.967010740373418,"endHours":15.967010740373418,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:58","end":"16:58","startHours":15.967010740373418,"endHours":16.967010740373418,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:58","end":"17:58","startHours":16.967010740373418,"endHours":17.967010740373418,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:58","end":"18:58","startHours":17.967010740373418,"endHours":18.967010740373418,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:58","end":"19:58","startHours":18.967010740373418,"endHours":19.967010740373418,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:58","end":"20:58","startHours":19.967010740373418,"endHours":20.967010740373418,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:58","end":"21:58","startHours":20.967010740373418,"endHours":21.967010740373418,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:58","end":"22:58","startHours":21.967010740373418,"endHours":22.967010740373418,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:58","end":"23:58","startHours":22.967010740373418,"endHours":23.967010740373418,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:58","end":"00:58","startHours":23.967010740373418,"endHours":24.967010740373418,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:58","end":"01:58","startHours":24.967010740373418,"endHours":25.967010740373418,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:58","end":"02:58","startHours":25.967010740373418,"endHours":26.967010740373418,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:58","end":"03:58","startHours":26.967010740373418,"endHours":27.967010740373418,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:58","end":"04:58","startHours":27.967010740373418,"endHours":28.967010740373418,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:58","end":"05:58","startHours":28.967010740373418,"endHours":29.967010740373418,"planetary_lord":"Venus"}],"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","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-East","rahuVasa":"North-East","anandadiYoga":{"name":"Śubha","quality":"Auspicious"},"tropicalRitu":"Grīṣma (Summer)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":23.294357867765363,"eotMinutes":-0.19245696533128553,"ayanamsa":23.5939}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Jyeṣṭha","lunar_month_paksha_full":"Jyeṣṭha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Jyeṣṭha","lunar_month_amanta":"Jyeṣṭha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mithuna (Āni)","ritu":"Grīṣma (Summer)","display_summary":"Jyeṣṭha Śukla Trayodaśī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"mithuna-sankranti","name":"Mithuna Saṅkrānti","name_sanskrit":"मिथुन सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Gemini.","vrata":false,"detection":{"sun_rashi_ingress":"Mithuna"},"precedence":5},{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"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":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Viśākhā","url":"/day/-0562-04-11","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"bhavnagar"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga June 15, 1981 CE · Bhavnagar, Gujarat · Vidhyamitra","description":"June 15, 1981 CE for Bhavnagar, Gujarat: Śukla Trayodaśī, sūryodaya 05:58, sūryāsta 19:25.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/bhavnagar/1981-06-15","hreflang_alternates":{"en":"https://vidhyamitra.com/city/bhavnagar/1981-06-15","sa":"https://sa.vidhyamitra.com/city/bhavnagar/1981-06-15","hi":"https://hi.vidhyamitra.com/city/bhavnagar/1981-06-15","x-default":"https://vidhyamitra.com/city/bhavnagar/1981-06-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T23:59:51.593Z","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":"2026-06-02T23:59:51.594Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T23:59:51.594Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}