{"id":"vidhyamitra:city-day:perth:2102-02-07:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2102-02-07","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2102-02-07","date_display":"February 7, 2102 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":2102,"month":2,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2488836.770833,"kali_year":5203,"ahargana":1900371.2708,"sun":{"sidereal_longitude":292.3401,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":157.1023,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":224.7621,"elapsed_within_tithi_degrees":8.7621},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4,"moon_longitude":157.1023,"elapsed_within_degrees":10.4356},"yoga":{"number":7,"name":"Sukarma","sum_longitude":89.4424},"karana":{"half_tithi_index":37,"name":"Bālava"},"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":2102,"month":2,"day":7,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2488836.770833,"ahargana":1900371.2708,"kali_year":5203,"ayanamsa_lahiri":25.2793,"grahas":{"sun":{"sidereal_longitude":292.533591,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"moon":{"sidereal_longitude":155.08509100000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false,"latitude":-3.3383},"mars":{"sidereal_longitude":47.347290999999984,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":267.54299100000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":232.81589099999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":245.70909099999994,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":203.61089100000004,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":289.1848,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":109.1848,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","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":"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":2102,"month":2,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2488836.770833,"kali_year":5203,"ahargana":1900371.2708,"sun":{"sidereal_longitude":292.3401,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":157.1023,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":224.7621,"elapsed_within_tithi_degrees":8.7621},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4,"moon_longitude":157.1023,"elapsed_within_degrees":10.4356},"yoga":{"number":7,"name":"Sukarma","sum_longitude":89.4424},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.338,"elongation":135.238},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.338,"opposition_distance":44.762}},"eclipse_window_40days":[{"offset_days":-19,"type":"solar","occurs":true,"moon_latitude":-1.366,"elongation":0.393},{"offset_days":-4,"type":"lunar","occurs":true,"moon_latitude":0.307,"opposition_distance":2.772}]},"city":{"slug":"perth","name":"Perth, Australia","lat":-31.9505,"lon":115.8605,"tz_offset_hours":8,"country":"AU","tier":"diaspora"},"tier2":{"city":{"slug":"perth","name":"Perth, Australia","lat":-31.9505,"lon":115.8605,"tz_offset_hours":8,"country":"AU","tier":"diaspora"},"sunriseLocal":"05:47","sunsetLocal":"19:15","solarNoonLocal":"12:31","dayLengthHours":13.46535972317185,"dayLengthDisplay":"13 Hours 27 Mins 55 Secs","nightLengthDisplay":"10 Hours 32 Mins 05 Secs","moonriseLocal":"21:18","moonsetLocal":"09:24","rahuKala":{"name":"Rāhu Kāla","start":"15:53","end":"17:34","startHours":15.881934139282404,"endHours":17.565104104678888,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:09","end":"10:50","startHours":9.149254277696478,"endHours":10.83242424309296,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:31","end":"14:12","startHours":12.515594208489443,"endHours":14.198764173885923,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:55","end":"09:22","startHours":8.924831615643615,"endHours":9.373676939749343,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:21","end":"06:42","startHours":6.343971002035677,"endHours":6.70304726132026,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:04","end":"12:58","startHours":12.066748884383715,"endHours":12.96443953259517,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:59","end":"04:53","startHours":3.987533050480603,"endHours":4.88522369869206,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:40","end":"05:47","startHours":4.660801036639196,"endHours":5.7829143469035165,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:46","end":"15:39","startHours":14.759820829018082,"endHours":15.657511477229539,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:03","end":"19:27","startHours":19.04827407007537,"endHours":19.448274070075367,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:15","end":"19:49","startHours":19.248274070075368,"endHours":19.809330725207527,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:00","end":"20:45","startHours":18.998274070075368,"endHours":20.748274070075368,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:04","end":"00:58","startHours":24.066748884383713,"endHours":24.964439532595172,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:47","end":"07:28","startHours":5.7829143469035165,"endHours":7.466084312299998,"quality":"inauspicious"},{"name":"Udveg","start":"07:28","end":"09:09","startHours":7.466084312299998,"endHours":9.149254277696478,"quality":"inauspicious"},{"name":"Chala","start":"09:09","end":"10:50","startHours":9.149254277696478,"endHours":10.83242424309296,"quality":"neutral"},{"name":"Labha","start":"10:50","end":"12:31","startHours":10.83242424309296,"endHours":12.515594208489443,"quality":"auspicious"},{"name":"Amṛta","start":"12:31","end":"14:12","startHours":12.515594208489443,"endHours":14.198764173885923,"quality":"auspicious"},{"name":"Kāla","start":"14:12","end":"15:53","startHours":14.198764173885923,"endHours":15.881934139282404,"quality":"inauspicious"},{"name":"Śubha","start":"15:53","end":"17:34","startHours":15.881934139282404,"endHours":17.565104104678888,"quality":"auspicious"},{"name":"Roga","start":"17:34","end":"19:15","startHours":17.565104104678888,"endHours":19.248274070075368,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"19:15","end":"20:34","startHours":19.248274070075368,"endHours":20.565104104678888,"quality":"inauspicious"},{"name":"Śubha","start":"20:34","end":"21:53","startHours":20.565104104678888,"endHours":21.881934139282407,"quality":"auspicious"},{"name":"Roga","start":"21:53","end":"23:12","startHours":21.881934139282407,"endHours":23.198764173885923,"quality":"inauspicious"},{"name":"Udveg","start":"23:12","end":"00:31","startHours":23.198764173885923,"endHours":24.515594208489443,"quality":"inauspicious"},{"name":"Chala","start":"00:31","end":"01:50","startHours":24.515594208489443,"endHours":25.832424243092962,"quality":"neutral"},{"name":"Labha","start":"01:50","end":"03:09","startHours":25.832424243092962,"endHours":27.14925427769648,"quality":"auspicious"},{"name":"Amṛta","start":"03:09","end":"04:28","startHours":27.14925427769648,"endHours":28.466084312299998,"quality":"auspicious"},{"name":"Kāla","start":"04:28","end":"05:47","startHours":28.466084312299998,"endHours":29.782914346903517,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:47","end":"06:47","startHours":5.7829143469035165,"endHours":6.7829143469035165,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:47","end":"07:47","startHours":6.7829143469035165,"endHours":7.7829143469035165,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:47","end":"08:47","startHours":7.7829143469035165,"endHours":8.782914346903517,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:47","end":"09:47","startHours":8.782914346903517,"endHours":9.782914346903517,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:47","end":"10:47","startHours":9.782914346903517,"endHours":10.782914346903517,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:47","end":"11:47","startHours":10.782914346903517,"endHours":11.782914346903517,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:47","end":"12:47","startHours":11.782914346903517,"endHours":12.782914346903517,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:47","end":"13:47","startHours":12.782914346903517,"endHours":13.782914346903517,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:47","end":"14:47","startHours":13.782914346903517,"endHours":14.782914346903517,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:47","end":"15:47","startHours":14.782914346903517,"endHours":15.782914346903517,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:47","end":"16:47","startHours":15.782914346903517,"endHours":16.782914346903517,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:47","end":"17:47","startHours":16.782914346903517,"endHours":17.782914346903517,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:47","end":"18:47","startHours":17.782914346903517,"endHours":18.782914346903517,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:47","end":"19:47","startHours":18.782914346903517,"endHours":19.782914346903517,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:47","end":"20:47","startHours":19.782914346903517,"endHours":20.782914346903517,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:47","end":"21:47","startHours":20.782914346903517,"endHours":21.782914346903517,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:47","end":"22:47","startHours":21.782914346903517,"endHours":22.782914346903517,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:47","end":"23:47","startHours":22.782914346903517,"endHours":23.782914346903517,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:47","end":"00:47","startHours":23.782914346903517,"endHours":24.782914346903517,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:47","end":"01:47","startHours":24.782914346903517,"endHours":25.782914346903517,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:47","end":"02:47","startHours":25.782914346903517,"endHours":26.782914346903517,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:47","end":"03:47","startHours":26.782914346903517,"endHours":27.782914346903517,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:47","end":"04:47","startHours":27.782914346903517,"endHours":28.782914346903517,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:47","end":"05:47","startHours":28.782914346903517,"endHours":29.782914346903517,"planetary_lord":"Saturn"}],"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","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"North (Uttara)","chandraVasa":"North-West","rahuVasa":"North","anandadiYoga":{"name":"Śubha","quality":"Auspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-15.491700314796232,"eotMinutes":-14.37765250936663,"ayanamsa":25.2793}},"calendars":{"vikram_samvat":2159,"vikram_samvatsara":"Yuva","saka_samvat":2024,"saka_samvatsara":"Dundubhi","bengali_samvat":1509,"malayalam_era":1278,"nanakshahi_year":633,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Kṛṣṇa Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Kṛṣṇa Caturthī · Vikram 2159 Yuva · Śaka 2024 Dundubhi"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2},{"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":"sankashti-chaturthi","name":"Saṅkaṣṭī Caturthī","name_sanskrit":"सङ्कष्टी चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Gaṇeśa vrata.","vrata":true,"detection":{"tithi_number":19,"tithi_paksha":"Kṛṣṇa"},"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":"perth"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga February 7, 2102 CE · Perth, Australia · Vidhyamitra","description":"February 7, 2102 CE for Perth, Australia: Kṛṣṇa Caturthī, sūryodaya 05:47, sūryāsta 19:15.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2102-02-07","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2102-02-07","sa":"https://sa.vidhyamitra.com/city/perth/2102-02-07","hi":"https://hi.vidhyamitra.com/city/perth/2102-02-07","x-default":"https://vidhyamitra.com/city/perth/2102-02-07"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-24T13:18:44.671Z","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":"2026-05-24T13:18:44.671Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-24T13:18:44.671Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}