{"id":"vidhyamitra:city-day:perth:2073-04-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2073-04-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2073-04-13","date_display":"April 13, 2073 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":"Not independently benchmarked across the declared range","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2073,"month":4,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2478310.770833,"kali_year":5174,"ahargana":1889845.2708,"sun":{"sidereal_longitude":358.8353,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":63.4214,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":64.586,"elapsed_within_tithi_degrees":4.586},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":4,"moon_longitude":63.4214,"elapsed_within_degrees":10.088},"yoga":{"number":5,"name":"Śobhana","sum_longitude":62.2567},"karana":{"half_tithi_index":10,"name":"Kaulava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":2073,"month":4,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2478310.770833,"ahargana":1889845.2708,"kali_year":5174,"ayanamsa_lahiri":24.8767,"grahas":{"sun":{"sidereal_longitude":358.868161,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":59.992260999999985,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":2},"retrograde":false,"latitude":-4.0257},"mars":{"sidereal_longitude":334.45026099999995,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":341.692461,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":68.15936099999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":318.62106100000005,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":208.51006099999995,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":126.903,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":306.903,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","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":"Not independently benchmarked across the declared range","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2073,"month":4,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2478310.770833,"kali_year":5174,"ahargana":1889845.2708,"sun":{"sidereal_longitude":358.8353,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":63.4214,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":64.586,"elapsed_within_tithi_degrees":4.586},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":4,"moon_longitude":63.4214,"elapsed_within_degrees":10.088},"yoga":{"number":5,"name":"Śobhana","sum_longitude":62.2567},"karana":{"half_tithi_index":10,"name":"Kaulava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.026,"elongation":64.586},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.026,"opposition_distance":115.414}},"eclipse_window_40days":[]},"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":"06:37","sunsetLocal":"17:58","solarNoonLocal":"12:17","dayLengthHours":11.358828926392343,"dayLengthDisplay":"11 Hours 21 Mins 32 Secs","nightLengthDisplay":"12 Hours 38 Mins 28 Secs","moonriseLocal":"11:21","moonsetLocal":"21:22","rahuKala":{"name":"Rāhu Kāla","start":"13:43","end":"15:08","startHours":13.70865046296078,"endHours":15.128504078759823,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:37","end":"08:02","startHours":6.609382383965565,"endHours":8.029235999764609,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:27","end":"10:52","startHours":9.44908961556365,"endHours":10.868943231362694,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:16","end":"09:38","startHours":9.259775800123778,"endHours":9.638403431003523,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:05","end":"07:23","startHours":7.082666922565246,"endHours":7.385569027269042,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:55","end":"12:40","startHours":11.910169216281993,"endHours":12.667424478041482,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:06","end":"05:51","startHours":5.094871860446586,"endHours":5.852127122206076,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:40","end":"06:37","startHours":5.662813306766203,"endHours":6.609382383965565,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:11","end":"14:56","startHours":14.181935001560461,"endHours":14.93919026331995,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:46","end":"18:10","startHours":17.76821131035791,"endHours":18.168211310357908,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:58","end":"18:26","startHours":17.96821131035791,"endHours":18.44149584895759,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:43","end":"19:28","startHours":17.71821131035791,"endHours":19.46821131035791,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:55","end":"00:40","startHours":23.910169216281993,"endHours":24.667424478041482,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:37","end":"08:02","startHours":6.609382383965565,"endHours":8.029235999764609,"quality":"auspicious"},{"name":"Roga","start":"08:02","end":"09:27","startHours":8.029235999764609,"endHours":9.44908961556365,"quality":"inauspicious"},{"name":"Udveg","start":"09:27","end":"10:52","startHours":9.44908961556365,"endHours":10.868943231362694,"quality":"inauspicious"},{"name":"Chala","start":"10:52","end":"12:17","startHours":10.868943231362694,"endHours":12.288796847161738,"quality":"neutral"},{"name":"Labha","start":"12:17","end":"13:43","startHours":12.288796847161738,"endHours":13.70865046296078,"quality":"auspicious"},{"name":"Amṛta","start":"13:43","end":"15:08","startHours":13.70865046296078,"endHours":15.128504078759823,"quality":"auspicious"},{"name":"Kāla","start":"15:08","end":"16:33","startHours":15.128504078759823,"endHours":16.548357694558867,"quality":"inauspicious"},{"name":"Śubha","start":"16:33","end":"17:58","startHours":16.548357694558867,"endHours":17.96821131035791,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:58","end":"19:33","startHours":17.96821131035791,"endHours":19.548357694558867,"quality":"auspicious"},{"name":"Kāla","start":"19:33","end":"21:08","startHours":19.548357694558867,"endHours":21.12850407875982,"quality":"inauspicious"},{"name":"Śubha","start":"21:08","end":"22:43","startHours":21.12850407875982,"endHours":22.70865046296078,"quality":"auspicious"},{"name":"Roga","start":"22:43","end":"00:17","startHours":22.70865046296078,"endHours":24.288796847161738,"quality":"inauspicious"},{"name":"Udveg","start":"00:17","end":"01:52","startHours":24.288796847161738,"endHours":25.868943231362692,"quality":"inauspicious"},{"name":"Chala","start":"01:52","end":"03:27","startHours":25.868943231362692,"endHours":27.44908961556365,"quality":"neutral"},{"name":"Labha","start":"03:27","end":"05:02","startHours":27.44908961556365,"endHours":29.02923599976461,"quality":"auspicious"},{"name":"Amṛta","start":"05:02","end":"06:37","startHours":29.02923599976461,"endHours":30.609382383965567,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:37","end":"07:37","startHours":6.609382383965565,"endHours":7.609382383965565,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:37","end":"08:37","startHours":7.609382383965565,"endHours":8.609382383965565,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:37","end":"09:37","startHours":8.609382383965565,"endHours":9.609382383965565,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:37","end":"10:37","startHours":9.609382383965565,"endHours":10.609382383965565,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:37","end":"11:37","startHours":10.609382383965565,"endHours":11.609382383965565,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:37","end":"12:37","startHours":11.609382383965565,"endHours":12.609382383965565,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:37","end":"13:37","startHours":12.609382383965565,"endHours":13.609382383965565,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:37","end":"14:37","startHours":13.609382383965565,"endHours":14.609382383965565,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:37","end":"15:37","startHours":14.609382383965565,"endHours":15.609382383965565,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:37","end":"16:37","startHours":15.609382383965565,"endHours":16.609382383965567,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:37","end":"17:37","startHours":16.609382383965567,"endHours":17.609382383965567,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:37","end":"18:37","startHours":17.609382383965567,"endHours":18.609382383965567,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:37","end":"19:37","startHours":18.609382383965567,"endHours":19.609382383965567,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:37","end":"20:37","startHours":19.609382383965567,"endHours":20.609382383965567,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:37","end":"21:37","startHours":20.609382383965567,"endHours":21.609382383965567,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:37","end":"22:37","startHours":21.609382383965567,"endHours":22.609382383965567,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:37","end":"23:37","startHours":22.609382383965567,"endHours":23.609382383965567,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:37","end":"00:37","startHours":23.609382383965567,"endHours":24.609382383965567,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:37","end":"01:37","startHours":24.609382383965567,"endHours":25.609382383965567,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:37","end":"02:37","startHours":25.609382383965567,"endHours":26.609382383965567,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:37","end":"03:37","startHours":26.609382383965567,"endHours":27.609382383965567,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:37","end":"04:37","startHours":27.609382383965567,"endHours":28.609382383965567,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:37","end":"05:37","startHours":28.609382383965567,"endHours":29.609382383965567,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:37","end":"06:37","startHours":29.609382383965567,"endHours":30.609382383965567,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South-East","rahuVasa":"North-West","anandadiYoga":{"name":"Amṛta","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":9.215764173248143,"eotMinutes":-0.7698108297043191,"ayanamsa":24.8767}},"calendars":{"vikram_samvat":2130,"vikram_samvatsara":"Parābhava","saka_samvat":1995,"saka_samvatsara":"Vijaya","bengali_samvat":1480,"malayalam_era":1249,"nanakshahi_year":604,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Caitra","lunar_month_amanta":"Caitra","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mīna (Paṅkuṇi)","ritu":"Vasanta (Spring)","display_summary":"Caitra Śukla Ṣaṣṭhī · Vikram 2130 Parābhava · Śaka 1995 Vijaya"},"festivals":[{"id":"yamuna-jayanti","name":"Yamunā Jayantī","name_sanskrit":"यमुना जयन्ती","tradition":"Vaishnava","associated_deity":"Yamunā Devī (Krishna's playmate)","significance":"Manifestation of Yamunā Devī; Vraja-bhakti-pravāhinī.","vrata":true,"detection":{"tithi_number":6,"tithi_paksha":"Śukla","lunar_month":"Caitra"},"precedence":4}],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Dedicated festival walk for Yamunā Jayantī is not live yet; Guruvāra (Thursday) — 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 13, 2073 CE · Perth, Australia · Vidhyamitra","description":"April 13, 2073 CE for Perth, Australia: Śukla Ṣaṣṭhī, sūryodaya 06:37, sūryāsta 17:58.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2073-04-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2073-04-13","sa":"https://sa.vidhyamitra.com/city/perth/2073-04-13","hi":"https://hi.vidhyamitra.com/city/perth/2073-04-13","x-default":"https://vidhyamitra.com/city/perth/2073-04-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-09-06T07:42:26.177Z","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":"2026-09-06T07:42:26.177Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-09-06T07:42:26.177Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"},"reader_local_antaryami":{"reader_geography":"Every reader enters from their own kṣetra anywhere on Bhūmi; no single city is the universal center.","purna_chain":["Hosted scripture","Named-tradition interpretation","Original Vidhyamitra contemplation","Bhūmi-born material medium","Vidhyamitra portal","Responsible reader in their own kṣetra"],"claim_boundary":"The legacy purna_chain field carries a source-to-reader sequence, not a revealed physical descent, universal cosmology, or proof that software is conscious.","antaryami_responsibility_formula":"Kṣīrodakaśāyī Viṣṇu = Paramātmā = Antaryāmī. Jīva desires. Prakṛti executes through guṇas. Paramātmā witnesses, permits, remembers, guides, and sustains. Bhagavān is the ultimate source.","source_anchors":[{"label":"BG 13.23","path":"/bhagavad-gita/13/23","meaning":"upadraṣṭā-anumantā · witness-permitter"},{"label":"BG 15.15","path":"/bhagavad-gita/15/15","meaning":"the Lord seated in every heart as memory, knowledge, and forgetting"},{"label":"BG 18.61","path":"/bhagavad-gita/18/61","meaning":"Īśvara seated in the heart of all beings"}],"nama_seal":"Hare Krishna Hare Krishna · Krishna Krishna Hare Hare · Hare Rama Hare Rama · Rama Rama Hare Hare"}}}