{"id":"vidhyamitra:city-day:thane:1983-01-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/thane/1983-01-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1983-01-18","date_display":"January 18, 1983 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":1983,"month":1,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2445352.770833,"kali_year":5084,"ahargana":1856887.2708,"sun":{"sidereal_longitude":273.7046,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":318.7756,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":45.071,"elapsed_within_tithi_degrees":9.071},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4,"moon_longitude":318.7756,"elapsed_within_degrees":12.1089},"yoga":{"number":18,"name":"Varīyān","sum_longitude":232.4802},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":1983,"month":1,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2445352.770833,"ahargana":1856887.2708,"kali_year":5084,"ayanamsa_lahiri":23.6162,"grahas":{"sun":{"sidereal_longitude":273.7537990000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":315.33639900000003,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"retrograde":false,"latitude":-4.0973},"mars":{"sidereal_longitude":307.014599,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":269.514599,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":true},"jupiter":{"sidereal_longitude":221.45779900000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":292.03199900000004,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":189.93229900000006,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":73.1764,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":253.1764,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","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":1983,"month":1,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2445352.770833,"kali_year":5084,"ahargana":1856887.2708,"sun":{"sidereal_longitude":273.7046,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":318.7756,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":45.071,"elapsed_within_tithi_degrees":9.071},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4,"moon_longitude":318.7756,"elapsed_within_degrees":12.1089},"yoga":{"number":18,"name":"Varīyān","sum_longitude":232.4802},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.097,"elongation":45.071},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.097,"opposition_distance":134.929}},"eclipse_window_40days":[{"offset_days":-4,"type":"solar","occurs":true,"moon_latitude":-1.179,"elongation":1.007}]},"city":{"slug":"thane","name":"Thane, Maharashtra","lat":19.2183,"lon":72.9781,"tz_offset_hours":5.5,"state":"Maharashtra","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"thane","name":"Thane, Maharashtra","lat":19.2183,"lon":72.9781,"tz_offset_hours":5.5,"state":"Maharashtra","country":"IN","tier":"tier-1"},"sunriseLocal":"07:15","sunsetLocal":"18:22","solarNoonLocal":"12:48","dayLengthHours":11.11834017525802,"dayLengthDisplay":"11 Hours 07 Mins 06 Secs","nightLengthDisplay":"12 Hours 52 Mins 54 Secs","moonriseLocal":"09:44","moonsetLocal":"21:26","rahuKala":{"name":"Rāhu Kāla","start":"15:35","end":"16:59","startHours":15.58686553684267,"endHours":16.97665805874992,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:02","end":"11:25","startHours":10.02769544921366,"endHours":11.417487971120911,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:48","end":"14:12","startHours":12.807280493028163,"endHours":14.197073014935416,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:51","end":"10:13","startHours":9.842389779626025,"endHours":10.213001118801293,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:43","end":"08:00","startHours":7.711374579368238,"endHours":8.007863650708451,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:26","end":"13:11","startHours":12.436669153852895,"endHours":13.17789183220343,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:46","end":"06:30","startHours":5.765665048698084,"endHours":6.506887727048619,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:19","end":"07:15","startHours":6.321582057460986,"endHours":7.248110405399154,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:40","end":"15:24","startHours":14.6603371889045,"endHours":15.401559867255035,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:10","end":"18:34","startHours":18.166450580657173,"endHours":18.566450580657172,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:22","end":"18:50","startHours":18.366450580657173,"endHours":18.829714754626256,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:07","end":"19:52","startHours":18.116450580657173,"endHours":19.866450580657173,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:26","end":"01:11","startHours":24.436669153852897,"endHours":25.17789183220343,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"07:15","end":"08:38","startHours":7.248110405399154,"endHours":8.637902927306406,"quality":"inauspicious"},{"name":"Udveg","start":"08:38","end":"10:02","startHours":8.637902927306406,"endHours":10.02769544921366,"quality":"inauspicious"},{"name":"Chala","start":"10:02","end":"11:25","startHours":10.02769544921366,"endHours":11.417487971120911,"quality":"neutral"},{"name":"Labha","start":"11:25","end":"12:48","startHours":11.417487971120911,"endHours":12.807280493028163,"quality":"auspicious"},{"name":"Amṛta","start":"12:48","end":"14:12","startHours":12.807280493028163,"endHours":14.197073014935416,"quality":"auspicious"},{"name":"Kāla","start":"14:12","end":"15:35","startHours":14.197073014935416,"endHours":15.58686553684267,"quality":"inauspicious"},{"name":"Śubha","start":"15:35","end":"16:59","startHours":15.58686553684267,"endHours":16.97665805874992,"quality":"auspicious"},{"name":"Roga","start":"16:59","end":"18:22","startHours":16.97665805874992,"endHours":18.366450580657173,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"18:22","end":"19:59","startHours":18.366450580657173,"endHours":19.97665805874992,"quality":"inauspicious"},{"name":"Śubha","start":"19:59","end":"21:35","startHours":19.97665805874992,"endHours":21.586865536842666,"quality":"auspicious"},{"name":"Roga","start":"21:35","end":"23:12","startHours":21.586865536842666,"endHours":23.197073014935416,"quality":"inauspicious"},{"name":"Udveg","start":"23:12","end":"00:48","startHours":23.197073014935416,"endHours":24.807280493028163,"quality":"inauspicious"},{"name":"Chala","start":"00:48","end":"02:25","startHours":24.807280493028163,"endHours":26.41748797112091,"quality":"neutral"},{"name":"Labha","start":"02:25","end":"04:02","startHours":26.41748797112091,"endHours":28.02769544921366,"quality":"auspicious"},{"name":"Amṛta","start":"04:02","end":"05:38","startHours":28.02769544921366,"endHours":29.637902927306406,"quality":"auspicious"},{"name":"Kāla","start":"05:38","end":"07:15","startHours":29.637902927306406,"endHours":31.248110405399153,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:15","end":"08:15","startHours":7.248110405399154,"endHours":8.248110405399153,"planetary_lord":"Mars"},{"name":"Hora 2","start":"08:15","end":"09:15","startHours":8.248110405399153,"endHours":9.248110405399153,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"09:15","end":"10:15","startHours":9.248110405399153,"endHours":10.248110405399153,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"10:15","end":"11:15","startHours":10.248110405399153,"endHours":11.248110405399153,"planetary_lord":"Moon"},{"name":"Hora 5","start":"11:15","end":"12:15","startHours":11.248110405399153,"endHours":12.248110405399153,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"12:15","end":"13:15","startHours":12.248110405399153,"endHours":13.248110405399153,"planetary_lord":"Venus"},{"name":"Hora 7","start":"13:15","end":"14:15","startHours":13.248110405399153,"endHours":14.248110405399153,"planetary_lord":"Sun"},{"name":"Hora 8","start":"14:15","end":"15:15","startHours":14.248110405399153,"endHours":15.248110405399153,"planetary_lord":"Mars"},{"name":"Hora 9","start":"15:15","end":"16:15","startHours":15.248110405399153,"endHours":16.248110405399153,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"16:15","end":"17:15","startHours":16.248110405399153,"endHours":17.248110405399153,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"17:15","end":"18:15","startHours":17.248110405399153,"endHours":18.248110405399153,"planetary_lord":"Moon"},{"name":"Hora 12","start":"18:15","end":"19:15","startHours":18.248110405399153,"endHours":19.248110405399153,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"19:15","end":"20:15","startHours":19.248110405399153,"endHours":20.248110405399153,"planetary_lord":"Venus"},{"name":"Hora 14","start":"20:15","end":"21:15","startHours":20.248110405399153,"endHours":21.248110405399153,"planetary_lord":"Sun"},{"name":"Hora 15","start":"21:15","end":"22:15","startHours":21.248110405399153,"endHours":22.248110405399153,"planetary_lord":"Mars"},{"name":"Hora 16","start":"22:15","end":"23:15","startHours":22.248110405399153,"endHours":23.248110405399153,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"23:15","end":"00:15","startHours":23.248110405399153,"endHours":24.248110405399153,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"00:15","end":"01:15","startHours":24.248110405399153,"endHours":25.248110405399153,"planetary_lord":"Moon"},{"name":"Hora 19","start":"01:15","end":"02:15","startHours":25.248110405399153,"endHours":26.248110405399153,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"02:15","end":"03:15","startHours":26.248110405399153,"endHours":27.248110405399153,"planetary_lord":"Venus"},{"name":"Hora 21","start":"03:15","end":"04:15","startHours":27.248110405399153,"endHours":28.248110405399153,"planetary_lord":"Sun"},{"name":"Hora 22","start":"04:15","end":"05:15","startHours":28.248110405399153,"endHours":29.248110405399153,"planetary_lord":"Mars"},{"name":"Hora 23","start":"05:15","end":"06:15","startHours":29.248110405399153,"endHours":30.248110405399153,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"06:15","end":"07:15","startHours":30.248110405399153,"endHours":31.248110405399153,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"South","rahuVasa":"North","anandadiYoga":{"name":"Prajāpati","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-20.683705166096644,"eotMinutes":-10.349229581689698,"ayanamsa":23.6162}},"calendars":{"vikram_samvat":2040,"vikram_samvatsara":"Dhātṛ","saka_samvat":1905,"saka_samvatsara":"Rudhirodgāri","bengali_samvat":1390,"malayalam_era":1159,"nanakshahi_year":514,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","lunar_month_amanta":"Pauṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Makara (Tai)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Caturthī · Vikram 2040 Dhātṛ · Śaka 1905 Rudhirodgāri"},"festivals":[{"id":"angarika-chaturthi","name":"Aṅgāraka Caturthī (Tuesday Caturthī)","name_sanskrit":"अङ्गारक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa + Maṅgala","significance":"Tuesday-Caturthī (rare); supremely auspicious for Maṅgala-doṣa-nivāraṇa.","vrata":true,"detection":{"any_of":[{"tithi_number":4,"vara_name":"Maṅgalavāra (Tuesday)"},{"tithi_number":19,"vara_name":"Maṅgalavāra (Tuesday)"}]},"precedence":3},{"id":"vinayaka-chaturthi","name":"Vināyaka Caturthī (monthly)","name_sanskrit":"विनायक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Śukla-pakṣa Caturthī; auspicious for new ventures.","vrata":true,"detection":{"tithi_number":4,"tithi_paksha":"Śukla"},"precedence":6}],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"thane"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 18, 1983 CE · Thane, Maharashtra · Vidhyamitra","description":"January 18, 1983 CE for Thane, Maharashtra: Śukla Caturthī, sūryodaya 07:15, sūryāsta 18:22.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/thane/1983-01-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/thane/1983-01-18","sa":"https://sa.vidhyamitra.com/city/thane/1983-01-18","hi":"https://hi.vidhyamitra.com/city/thane/1983-01-18","x-default":"https://vidhyamitra.com/city/thane/1983-01-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T03:17:52.909Z","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":"2026-05-31T03:17:52.909Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T03:17:52.909Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}