{"id":"vidhyamitra:city-day:perth:1985-10-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1985-10-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1985-10-13","date_display":"October 13, 1985 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":1985,"month":10,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446351.770833,"kali_year":5087,"ahargana":1857886.2708,"sun":{"sidereal_longitude":175.2953,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":159.0974,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":343.8021,"elapsed_within_tithi_degrees":7.8021},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4,"moon_longitude":159.0974,"elapsed_within_degrees":12.4307},"yoga":{"number":26,"name":"Indra","sum_longitude":334.3926},"karana":{"half_tithi_index":57,"name":"Śakuni"},"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":1985,"month":10,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2446351.770833,"ahargana":1857886.2708,"kali_year":5087,"ayanamsa_lahiri":23.6544,"grahas":{"sun":{"sidereal_longitude":175.99833,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":159.88582999999994,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false,"latitude":2.9593},"mars":{"sidereal_longitude":147.35983,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":189.95023000000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":284.46883,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"venus":{"sidereal_longitude":152.26053000000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":212.01882999999998,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":20.2446,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":200.2446,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","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":1985,"month":10,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446351.770833,"kali_year":5087,"ahargana":1857886.2708,"sun":{"sidereal_longitude":175.2953,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":159.0974,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":343.8021,"elapsed_within_tithi_degrees":7.8021},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4,"moon_longitude":159.0974,"elapsed_within_degrees":12.4307},"yoga":{"number":26,"name":"Indra","sum_longitude":334.3926},"karana":{"half_tithi_index":57,"name":"Śakuni"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.959,"elongation":16.198},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.959,"opposition_distance":163.802}},"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":"05:39","sunsetLocal":"18:25","solarNoonLocal":"12:02","dayLengthHours":12.776514292385514,"dayLengthDisplay":"12 Hours 46 Mins 35 Secs","nightLengthDisplay":"11 Hours 13 Mins 25 Secs","moonriseLocal":"04:51","moonsetLocal":"17:04","rahuKala":{"name":"Rāhu Kāla","start":"16:50","end":"18:25","startHours":16.82645237284331,"endHours":18.4235166593915,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:02","end":"13:38","startHours":12.035259513198742,"endHours":13.632323799746931,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:14","end":"16:50","startHours":15.22938808629512,"endHours":16.82645237284331,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:38","end":"09:03","startHours":8.628189035229273,"endHours":9.054072844975456,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:11","end":"06:31","startHours":6.179357129188716,"endHours":6.520064176985663,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:37","end":"12:28","startHours":11.609375703452558,"endHours":12.461143322944926,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:57","end":"04:48","startHours":3.943467128021251,"endHours":4.795234747513619,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:35","end":"05:39","startHours":4.582292842640527,"endHours":5.647002367005986,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"15:01","startHours":14.164678561929662,"endHours":15.01644618142203,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:13","end":"18:37","startHours":18.2235166593915,"endHours":18.6235166593915,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:25","end":"18:57","startHours":18.4235166593915,"endHours":18.95587142157423,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:10","end":"19:55","startHours":18.1735166593915,"endHours":19.9235166593915,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:37","end":"00:28","startHours":23.609375703452557,"endHours":24.461143322944928,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:39","end":"07:15","startHours":5.647002367005986,"endHours":7.244066653554175,"quality":"inauspicious"},{"name":"Chala","start":"07:15","end":"08:50","startHours":7.244066653554175,"endHours":8.841130940102364,"quality":"neutral"},{"name":"Labha","start":"08:50","end":"10:26","startHours":8.841130940102364,"endHours":10.438195226650553,"quality":"auspicious"},{"name":"Amṛta","start":"10:26","end":"12:02","startHours":10.438195226650553,"endHours":12.035259513198742,"quality":"auspicious"},{"name":"Kāla","start":"12:02","end":"13:38","startHours":12.035259513198742,"endHours":13.632323799746931,"quality":"inauspicious"},{"name":"Śubha","start":"13:38","end":"15:14","startHours":13.632323799746931,"endHours":15.22938808629512,"quality":"auspicious"},{"name":"Roga","start":"15:14","end":"16:50","startHours":15.22938808629512,"endHours":16.82645237284331,"quality":"inauspicious"},{"name":"Udveg","start":"16:50","end":"18:25","startHours":16.82645237284331,"endHours":18.4235166593915,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:25","end":"19:50","startHours":18.4235166593915,"endHours":19.82645237284331,"quality":"auspicious"},{"name":"Roga","start":"19:50","end":"21:14","startHours":19.82645237284331,"endHours":21.22938808629512,"quality":"inauspicious"},{"name":"Udveg","start":"21:14","end":"22:38","startHours":21.22938808629512,"endHours":22.63232379974693,"quality":"inauspicious"},{"name":"Chala","start":"22:38","end":"00:02","startHours":22.63232379974693,"endHours":24.035259513198742,"quality":"neutral"},{"name":"Labha","start":"00:02","end":"01:26","startHours":24.035259513198742,"endHours":25.438195226650553,"quality":"auspicious"},{"name":"Amṛta","start":"01:26","end":"02:50","startHours":25.438195226650553,"endHours":26.841130940102364,"quality":"auspicious"},{"name":"Kāla","start":"02:50","end":"04:15","startHours":26.841130940102364,"endHours":28.244066653554174,"quality":"inauspicious"},{"name":"Śubha","start":"04:15","end":"05:39","startHours":28.244066653554174,"endHours":29.647002367005985,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:39","end":"06:39","startHours":5.647002367005986,"endHours":6.647002367005986,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:39","end":"07:39","startHours":6.647002367005986,"endHours":7.647002367005986,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:39","end":"08:39","startHours":7.647002367005986,"endHours":8.647002367005985,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:39","end":"09:39","startHours":8.647002367005985,"endHours":9.647002367005985,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:39","end":"10:39","startHours":9.647002367005985,"endHours":10.647002367005985,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:39","end":"11:39","startHours":10.647002367005985,"endHours":11.647002367005985,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:39","end":"12:39","startHours":11.647002367005985,"endHours":12.647002367005985,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:39","end":"13:39","startHours":12.647002367005985,"endHours":13.647002367005985,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:39","end":"14:39","startHours":13.647002367005985,"endHours":14.647002367005985,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:39","end":"15:39","startHours":14.647002367005985,"endHours":15.647002367005985,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:39","end":"16:39","startHours":15.647002367005985,"endHours":16.647002367005985,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:39","end":"17:39","startHours":16.647002367005985,"endHours":17.647002367005985,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:39","end":"18:39","startHours":17.647002367005985,"endHours":18.647002367005985,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:39","end":"19:39","startHours":18.647002367005985,"endHours":19.647002367005985,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:39","end":"20:39","startHours":19.647002367005985,"endHours":20.647002367005985,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:39","end":"21:39","startHours":20.647002367005985,"endHours":21.647002367005985,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:39","end":"22:39","startHours":21.647002367005985,"endHours":22.647002367005985,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:39","end":"23:39","startHours":22.647002367005985,"endHours":23.647002367005985,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:39","end":"00:39","startHours":23.647002367005985,"endHours":24.647002367005985,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:39","end":"01:39","startHours":24.647002367005985,"endHours":25.647002367005985,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:39","end":"02:39","startHours":25.647002367005985,"endHours":26.647002367005985,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:39","end":"03:39","startHours":26.647002367005985,"endHours":27.647002367005985,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:39","end":"04:39","startHours":27.647002367005985,"endHours":28.647002367005985,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:39","end":"05:39","startHours":28.647002367005985,"endHours":29.647002367005985,"planetary_lord":"Jupiter"}],"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":"West (Paścim)","chandraVasa":"North-West","rahuVasa":"North-East","anandadiYoga":{"name":"Maitra","quality":"Auspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-7.68719747993893,"eotMinutes":14.442429208075392,"ayanamsa":23.6544}},"calendars":{"vikram_samvat":2042,"vikram_samvatsara":"Bahudhānya","saka_samvat":1907,"saka_samvatsara":"Krodhana","bengali_samvat":1392,"malayalam_era":1161,"nanakshahi_year":516,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Bhādrapada","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Caturdaśī · Vikram 2042 Bahudhānya · Śaka 1907 Krodhana"},"festivals":[{"id":"masika-shivaratri","name":"Māsika Śivarātri","name_sanskrit":"मासिक शिवरात्रि","tradition":"Shaiva","associated_deity":"Śiva","significance":"Monthly Śiva observance.","vrata":true,"detection":{"tithi_number":29,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"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":"Dedicated festival walk for Māsika Śivarātri is not live yet; 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 October 13, 1985 CE · Perth, Australia · Vidhyamitra","description":"October 13, 1985 CE for Perth, Australia: Kṛṣṇa Caturdaśī, sūryodaya 05:39, sūryāsta 18:25.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1985-10-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1985-10-13","sa":"https://sa.vidhyamitra.com/city/perth/1985-10-13","hi":"https://hi.vidhyamitra.com/city/perth/1985-10-13","x-default":"https://vidhyamitra.com/city/perth/1985-10-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-09-04T22:02:19.059Z","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":"2026-09-04T22:02:19.059Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-09-04T22:02:19.059Z","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"}}}