{"id":"vidhyamitra:city-day:perth:2091-04-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2091-04-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2091-04-01","date_display":"April 1, 2091 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":2091,"month":4,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2484872.770833,"kali_year":5192,"ahargana":1896407.2708,"sun":{"sidereal_longitude":346.4102,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":125.9336,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":139.5234,"elapsed_within_tithi_degrees":7.5234},"nakshatra":{"number":10,"name":"Maghā","pada":2,"moon_longitude":125.9336,"elapsed_within_degrees":5.9336},"yoga":{"number":9,"name":"Śūla","sum_longitude":112.3438},"karana":{"half_tithi_index":23,"name":"Bālava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":2091,"month":4,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2484872.770833,"ahargana":1896407.2708,"kali_year":5192,"ayanamsa_lahiri":25.1277,"grahas":{"sun":{"sidereal_longitude":346.453544,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":124.195244,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false,"latitude":-1.0329},"mars":{"sidereal_longitude":131.731744,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":true},"mercury":{"sidereal_longitude":327.160844,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":true},"jupiter":{"sidereal_longitude":264.2082439999999,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":315.297644,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":54.25314400000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":139.2166,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":319.2166,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","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":2091,"month":4,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2484872.770833,"kali_year":5192,"ahargana":1896407.2708,"sun":{"sidereal_longitude":346.4102,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":125.9336,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":139.5234,"elapsed_within_tithi_degrees":7.5234},"nakshatra":{"number":10,"name":"Maghā","pada":2,"moon_longitude":125.9336,"elapsed_within_degrees":5.9336},"yoga":{"number":9,"name":"Śūla","sum_longitude":112.3438},"karana":{"half_tithi_index":23,"name":"Bālava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.033,"elongation":139.523},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.033,"opposition_distance":40.477}},"eclipse_window_40days":[{"offset_days":-12,"type":"solar","occurs":true,"moon_latitude":-1.141,"elongation":0.03}]},"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":"06:28","sunsetLocal":"18:13","solarNoonLocal":"12:21","dayLengthHours":11.749615560597942,"dayLengthDisplay":"11 Hours 44 Mins 59 Secs","nightLengthDisplay":"12 Hours 15 Mins 01 Secs","moonriseLocal":"15:59","moonsetLocal":"03:05","rahuKala":{"name":"Rāhu Kāla","start":"16:45","end":"18:13","startHours":16.754477436910083,"endHours":18.223179381984828,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:21","end":"13:49","startHours":12.348371601685855,"endHours":13.8170735467606,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:17","end":"16:45","startHours":15.285775491835341,"endHours":16.754477436910083,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:13","end":"09:36","startHours":9.215140785526405,"endHours":9.606794637546336,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:58","end":"07:17","startHours":6.9631311364118,"endHours":7.2764542180277445,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:57","end":"12:44","startHours":11.956717749665925,"endHours":12.740025453705789,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:54","end":"05:41","startHours":4.906948413307159,"endHours":5.6902561173470225,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:30","end":"06:28","startHours":5.494429191337057,"endHours":6.473563821386885,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:18","end":"15:05","startHours":14.306640861785514,"endHours":15.089948565825377,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:01","end":"18:25","startHours":18.02317938198483,"endHours":18.423179381984827,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:13","end":"18:43","startHours":18.223179381984828,"endHours":18.71274669700974,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:58","end":"19:43","startHours":17.973179381984828,"endHours":19.723179381984828,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:57","end":"00:44","startHours":23.956717749665923,"endHours":24.740025453705787,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:28","end":"07:57","startHours":6.473563821386885,"endHours":7.942265766461627,"quality":"inauspicious"},{"name":"Chala","start":"07:57","end":"09:25","startHours":7.942265766461627,"endHours":9.41096771153637,"quality":"neutral"},{"name":"Labha","start":"09:25","end":"10:53","startHours":9.41096771153637,"endHours":10.879669656611114,"quality":"auspicious"},{"name":"Amṛta","start":"10:53","end":"12:21","startHours":10.879669656611114,"endHours":12.348371601685855,"quality":"auspicious"},{"name":"Kāla","start":"12:21","end":"13:49","startHours":12.348371601685855,"endHours":13.8170735467606,"quality":"inauspicious"},{"name":"Śubha","start":"13:49","end":"15:17","startHours":13.8170735467606,"endHours":15.285775491835341,"quality":"auspicious"},{"name":"Roga","start":"15:17","end":"16:45","startHours":15.285775491835341,"endHours":16.754477436910083,"quality":"inauspicious"},{"name":"Udveg","start":"16:45","end":"18:13","startHours":16.754477436910083,"endHours":18.223179381984828,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:13","end":"19:45","startHours":18.223179381984828,"endHours":19.754477436910086,"quality":"auspicious"},{"name":"Roga","start":"19:45","end":"21:17","startHours":19.754477436910086,"endHours":21.28577549183534,"quality":"inauspicious"},{"name":"Udveg","start":"21:17","end":"22:49","startHours":21.28577549183534,"endHours":22.8170735467606,"quality":"inauspicious"},{"name":"Chala","start":"22:49","end":"00:21","startHours":22.8170735467606,"endHours":24.348371601685855,"quality":"neutral"},{"name":"Labha","start":"00:21","end":"01:53","startHours":24.348371601685855,"endHours":25.879669656611114,"quality":"auspicious"},{"name":"Amṛta","start":"01:53","end":"03:25","startHours":25.879669656611114,"endHours":27.410967711536372,"quality":"auspicious"},{"name":"Kāla","start":"03:25","end":"04:57","startHours":27.410967711536372,"endHours":28.94226576646163,"quality":"inauspicious"},{"name":"Śubha","start":"04:57","end":"06:28","startHours":28.94226576646163,"endHours":30.473563821386886,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:28","end":"07:28","startHours":6.473563821386885,"endHours":7.473563821386885,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:28","end":"08:28","startHours":7.473563821386885,"endHours":8.473563821386886,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:28","end":"09:28","startHours":8.473563821386886,"endHours":9.473563821386886,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:28","end":"10:28","startHours":9.473563821386886,"endHours":10.473563821386886,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:28","end":"11:28","startHours":10.473563821386886,"endHours":11.473563821386886,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:28","end":"12:28","startHours":11.473563821386886,"endHours":12.473563821386886,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:28","end":"13:28","startHours":12.473563821386886,"endHours":13.473563821386886,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:28","end":"14:28","startHours":13.473563821386886,"endHours":14.473563821386886,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:28","end":"15:28","startHours":14.473563821386886,"endHours":15.473563821386886,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:28","end":"16:28","startHours":15.473563821386886,"endHours":16.473563821386886,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:28","end":"17:28","startHours":16.473563821386886,"endHours":17.473563821386886,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:28","end":"18:28","startHours":17.473563821386886,"endHours":18.473563821386886,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:28","end":"19:28","startHours":18.473563821386886,"endHours":19.473563821386886,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:28","end":"20:28","startHours":19.473563821386886,"endHours":20.473563821386886,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:28","end":"21:28","startHours":20.473563821386886,"endHours":21.473563821386886,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:28","end":"22:28","startHours":21.473563821386886,"endHours":22.473563821386886,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:28","end":"23:28","startHours":22.473563821386886,"endHours":23.473563821386886,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:28","end":"00:28","startHours":23.473563821386886,"endHours":24.473563821386886,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:28","end":"01:28","startHours":24.473563821386886,"endHours":25.473563821386886,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:28","end":"02:28","startHours":25.473563821386886,"endHours":26.473563821386886,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:28","end":"03:28","startHours":26.473563821386886,"endHours":27.473563821386886,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:28","end":"04:28","startHours":27.473563821386886,"endHours":28.473563821386886,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:28","end":"05:28","startHours":28.473563821386886,"endHours":29.473563821386886,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:28","end":"06:28","startHours":29.473563821386886,"endHours":30.473563821386886,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"West","rahuVasa":"North-East","anandadiYoga":{"name":"Mudgara","quality":"Inauspicious"},"drikRitu":"Vasanta (Spring) (Drik)","vedicRitu":"Śiśira (Winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":4.579809984415175,"eotMinutes":-4.344296101151456,"ayanamsa":25.1277}},"calendars":{"vikram_samvat":2148,"vikram_samvatsara":"Raktākṣī","saka_samvat":2013,"saka_samvatsara":"Virodhakṛt","bengali_samvat":1498,"malayalam_era":1267,"nanakshahi_year":622,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Śukla Pakṣa","solar_month":"Mīna (Paṅkuṇi)","ritu":"Vasanta (Spring)","display_summary":"Caitra Śukla Dvādaśī · Vikram 2148 Raktākṣī · Śaka 2013 Virodhakṛt"},"festivals":[{"id":"mina-sankranti","name":"Mīna Saṅkrānti","name_sanskrit":"मीन सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Pisces; Mīna-māsa begins.","vrata":false,"detection":{"sun_rashi":"Mīna"},"precedence":5}],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — 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 April 1, 2091 CE · Perth, Australia · Vidhyamitra","description":"April 1, 2091 CE for Perth, Australia: Śukla Dvādaśī, sūryodaya 06:28, sūryāsta 18:13.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2091-04-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2091-04-01","sa":"https://sa.vidhyamitra.com/city/perth/2091-04-01","hi":"https://hi.vidhyamitra.com/city/perth/2091-04-01","x-default":"https://vidhyamitra.com/city/perth/2091-04-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-20T03:39:23.647Z","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":"2026-05-20T03:39:23.647Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-20T03:39:23.647Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}