{"id":"vidhyamitra:city-day:thane:1990-04-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/thane/1990-04-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1990-04-18","date_display":"April 18, 1990 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":1990,"month":4,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2447999.770833,"kali_year":5092,"ahargana":1859534.2708,"sun":{"sidereal_longitude":4.1779,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":274.7662,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":23,"name":"Aṣṭamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Aṣṭamī","elongation_degrees":270.5883,"elapsed_within_tithi_degrees":6.5883},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3,"moon_longitude":274.7662,"elapsed_within_degrees":8.0995},"yoga":{"number":21,"name":"Siddha","sum_longitude":278.9441},"karana":{"half_tithi_index":45,"name":"Kaulava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":1990,"month":4,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2447999.770833,"ahargana":1859534.2708,"kali_year":5092,"ayanamsa_lahiri":23.7174,"grahas":{"sun":{"sidereal_longitude":4.035864000000004,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":271.19936400000006,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false,"latitude":-1.4012},"mars":{"sidereal_longitude":304.24296400000003,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":22.767764,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":71.29626400000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":318.710564,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":271.15896399999997,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":292.9256,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":112.9256,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","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":1990,"month":4,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2447999.770833,"kali_year":5092,"ahargana":1859534.2708,"sun":{"sidereal_longitude":4.1779,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":274.7662,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":23,"name":"Aṣṭamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Aṣṭamī","elongation_degrees":270.5883,"elapsed_within_tithi_degrees":6.5883},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3,"moon_longitude":274.7662,"elapsed_within_degrees":8.0995},"yoga":{"number":21,"name":"Siddha","sum_longitude":278.9441},"karana":{"half_tithi_index":45,"name":"Kaulava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.401,"elongation":89.412},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.401,"opposition_distance":90.588}},"eclipse_window_40days":[]},"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":"06:19","sunsetLocal":"18:56","solarNoonLocal":"12:38","dayLengthHours":12.622286986890899,"dayLengthDisplay":"12 Hours 37 Mins 20 Secs","nightLengthDisplay":"11 Hours 22 Mins 40 Secs","moonriseLocal":"00:55","moonsetLocal":"11:58","rahuKala":{"name":"Rāhu Kāla","start":"12:38","end":"14:12","startHours":12.626361951735277,"endHours":14.204147825096637,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:54","end":"09:28","startHours":7.893004331651189,"endHours":9.470790205012552,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"11:03","end":"12:38","startHours":11.048576078373912,"endHours":12.626361951735277,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:16","end":"09:41","startHours":9.260418755231036,"endHours":9.681161654794066,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:50","end":"07:11","startHours":6.841147082743614,"endHours":7.177741402394038,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:12","end":"13:03","startHours":12.205619052172247,"endHours":13.047104851298306,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:38","end":"05:28","startHours":4.632246860037706,"endHours":5.473732659163766,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:16","end":"06:19","startHours":5.263361209382252,"endHours":6.315218458289826,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:44","end":"15:34","startHours":14.730076449550424,"endHours":15.571562248676484,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:44","end":"19:08","startHours":18.737505445180727,"endHours":19.137505445180725,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:56","end":"19:28","startHours":18.937505445180726,"endHours":19.463434069634513,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:41","end":"20:26","startHours":18.687505445180726,"endHours":20.437505445180726,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:12","end":"01:03","startHours":24.205619052172246,"endHours":25.047104851298307,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"06:19","end":"07:54","startHours":6.315218458289826,"endHours":7.893004331651189,"quality":"auspicious"},{"name":"Amṛta","start":"07:54","end":"09:28","startHours":7.893004331651189,"endHours":9.470790205012552,"quality":"auspicious"},{"name":"Kāla","start":"09:28","end":"11:03","startHours":9.470790205012552,"endHours":11.048576078373912,"quality":"inauspicious"},{"name":"Śubha","start":"11:03","end":"12:38","startHours":11.048576078373912,"endHours":12.626361951735277,"quality":"auspicious"},{"name":"Roga","start":"12:38","end":"14:12","startHours":12.626361951735277,"endHours":14.204147825096637,"quality":"inauspicious"},{"name":"Udveg","start":"14:12","end":"15:47","startHours":14.204147825096637,"endHours":15.781933698458001,"quality":"inauspicious"},{"name":"Chala","start":"15:47","end":"17:22","startHours":15.781933698458001,"endHours":17.35971957181936,"quality":"neutral"},{"name":"Labha","start":"17:22","end":"18:56","startHours":17.35971957181936,"endHours":18.937505445180726,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"18:56","end":"20:22","startHours":18.937505445180726,"endHours":20.35971957181936,"quality":"inauspicious"},{"name":"Chala","start":"20:22","end":"21:47","startHours":20.35971957181936,"endHours":21.781933698458,"quality":"neutral"},{"name":"Labha","start":"21:47","end":"23:12","startHours":21.781933698458,"endHours":23.20414782509664,"quality":"auspicious"},{"name":"Amṛta","start":"23:12","end":"00:38","startHours":23.20414782509664,"endHours":24.626361951735277,"quality":"auspicious"},{"name":"Kāla","start":"00:38","end":"02:03","startHours":24.626361951735277,"endHours":26.048576078373912,"quality":"inauspicious"},{"name":"Śubha","start":"02:03","end":"03:28","startHours":26.048576078373912,"endHours":27.470790205012552,"quality":"auspicious"},{"name":"Roga","start":"03:28","end":"04:54","startHours":27.470790205012552,"endHours":28.89300433165119,"quality":"inauspicious"},{"name":"Udveg","start":"04:54","end":"06:19","startHours":28.89300433165119,"endHours":30.315218458289827,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:19","end":"07:19","startHours":6.315218458289826,"endHours":7.315218458289826,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"07:19","end":"08:19","startHours":7.315218458289826,"endHours":8.315218458289827,"planetary_lord":"Venus"},{"name":"Hora 3","start":"08:19","end":"09:19","startHours":8.315218458289827,"endHours":9.315218458289827,"planetary_lord":"Sun"},{"name":"Hora 4","start":"09:19","end":"10:19","startHours":9.315218458289827,"endHours":10.315218458289827,"planetary_lord":"Mars"},{"name":"Hora 5","start":"10:19","end":"11:19","startHours":10.315218458289827,"endHours":11.315218458289827,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"11:19","end":"12:19","startHours":11.315218458289827,"endHours":12.315218458289827,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"12:19","end":"13:19","startHours":12.315218458289827,"endHours":13.315218458289827,"planetary_lord":"Moon"},{"name":"Hora 8","start":"13:19","end":"14:19","startHours":13.315218458289827,"endHours":14.315218458289827,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"14:19","end":"15:19","startHours":14.315218458289827,"endHours":15.315218458289827,"planetary_lord":"Venus"},{"name":"Hora 10","start":"15:19","end":"16:19","startHours":15.315218458289827,"endHours":16.315218458289827,"planetary_lord":"Sun"},{"name":"Hora 11","start":"16:19","end":"17:19","startHours":16.315218458289827,"endHours":17.315218458289827,"planetary_lord":"Mars"},{"name":"Hora 12","start":"17:19","end":"18:19","startHours":17.315218458289827,"endHours":18.315218458289827,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"18:19","end":"19:19","startHours":18.315218458289827,"endHours":19.315218458289827,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"19:19","end":"20:19","startHours":19.315218458289827,"endHours":20.315218458289827,"planetary_lord":"Moon"},{"name":"Hora 15","start":"20:19","end":"21:19","startHours":20.315218458289827,"endHours":21.315218458289827,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"21:19","end":"22:19","startHours":21.315218458289827,"endHours":22.315218458289827,"planetary_lord":"Venus"},{"name":"Hora 17","start":"22:19","end":"23:19","startHours":22.315218458289827,"endHours":23.315218458289827,"planetary_lord":"Sun"},{"name":"Hora 18","start":"23:19","end":"00:19","startHours":23.315218458289827,"endHours":24.315218458289827,"planetary_lord":"Mars"},{"name":"Hora 19","start":"00:19","end":"01:19","startHours":24.315218458289827,"endHours":25.315218458289827,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"01:19","end":"02:19","startHours":25.315218458289827,"endHours":26.315218458289827,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"02:19","end":"03:19","startHours":26.315218458289827,"endHours":27.315218458289827,"planetary_lord":"Moon"},{"name":"Hora 22","start":"03:19","end":"04:19","startHours":27.315218458289827,"endHours":28.315218458289827,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"04:19","end":"05:19","startHours":28.315218458289827,"endHours":29.315218458289827,"planetary_lord":"Venus"},{"name":"Hora 24","start":"05:19","end":"06:19","startHours":29.315218458289827,"endHours":30.315218458289827,"planetary_lord":"Sun"}],"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":"North (Uttara)","chandraVasa":"South-East","rahuVasa":"South-West","anandadiYoga":{"name":"Saumya","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":10.67337963894377,"eotMinutes":0.5058828958834352,"ayanamsa":23.7174}},"calendars":{"vikram_samvat":2047,"vikram_samvatsara":"Subhānu","saka_samvat":1912,"saka_samvatsara":"Pramoda","bengali_samvat":1397,"malayalam_era":1166,"nanakshahi_year":521,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Caitra","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Kṛṣṇa Aṣṭamī · Vikram 2047 Subhānu · Śaka 1912 Pramoda"},"festivals":[],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3226-07-09","event":"Bhagavān Krishna's birth at Mathurā","chart_id":"krishna","shared_marker":"same Kṛṣṇa Aṣṭamī","url":"/day/-3226-07-09","relevance":0.5}]},"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 April 18, 1990 CE · Thane, Maharashtra · Vidhyamitra","description":"April 18, 1990 CE for Thane, Maharashtra: Kṛṣṇa Aṣṭamī, sūryodaya 06:19, sūryāsta 18:56.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/thane/1990-04-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/thane/1990-04-18","sa":"https://sa.vidhyamitra.com/city/thane/1990-04-18","hi":"https://hi.vidhyamitra.com/city/thane/1990-04-18","x-default":"https://vidhyamitra.com/city/thane/1990-04-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T04:54:37.278Z","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":"2026-06-01T04:54:37.278Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T04:54:37.278Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}