{"id":"vidhyamitra:city-day:perth:1985-01-27:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1985-01-27","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1985-01-27","date_display":"January 27, 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":"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":1985,"month":1,"day":27,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446092.770833,"kali_year":5086,"ahargana":1857627.2708,"sun":{"sidereal_longitude":283.424,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":352.9207,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":69.4966,"elapsed_within_tithi_degrees":9.4966},"nakshatra":{"number":27,"name":"Revatī","pada":2,"moon_longitude":352.9207,"elapsed_within_degrees":6.254},"yoga":{"number":21,"name":"Siddha","sum_longitude":276.3447},"karana":{"half_tithi_index":11,"name":"Taitila"},"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":1,"day":27,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2446092.770833,"ahargana":1857627.2708,"kali_year":5086,"ayanamsa_lahiri":23.6445,"grahas":{"sun":{"sidereal_longitude":283.40522599999997,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"moon":{"sidereal_longitude":350.67582600000003,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false,"latitude":-2.9533},"mars":{"sidereal_longitude":331.49782600000003,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":268.40312599999993,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":274.81112600000006,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":330.565026,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":212.80702599999995,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":33.9677,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":213.9677,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","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":1985,"month":1,"day":27,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446092.770833,"kali_year":5086,"ahargana":1857627.2708,"sun":{"sidereal_longitude":283.424,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":352.9207,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":69.4966,"elapsed_within_tithi_degrees":9.4966},"nakshatra":{"number":27,"name":"Revatī","pada":2,"moon_longitude":352.9207,"elapsed_within_degrees":6.254},"yoga":{"number":21,"name":"Siddha","sum_longitude":276.3447},"karana":{"half_tithi_index":11,"name":"Taitila"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.953,"elongation":69.497},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.953,"opposition_distance":110.503}},"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":"05:37","sunsetLocal":"19:22","solarNoonLocal":"12:29","dayLengthHours":13.748150640182555,"dayLengthDisplay":"13 Hours 44 Mins 53 Secs","nightLengthDisplay":"10 Hours 15 Mins 07 Secs","moonriseLocal":"11:10","moonsetLocal":"22:47","rahuKala":{"name":"Rāhu Kāla","start":"17:39","end":"19:22","startHours":17.64426991518311,"endHours":19.36278874520593,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:29","end":"14:12","startHours":12.488713425114652,"endHours":14.207232255137471,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:56","end":"17:39","startHours":15.92575108516029,"endHours":17.64426991518311,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:49","end":"09:17","startHours":8.822539921065971,"endHours":9.280811609072055,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:11","end":"06:33","startHours":6.1874777150309805,"endHours":6.554095065435849,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:02","end":"12:57","startHours":12.030441737108566,"endHours":12.946985113120737,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:47","end":"04:42","startHours":3.781551352999034,"endHours":4.698094729011204,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:28","end":"05:37","startHours":4.468958885008162,"endHours":5.614638105023374,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:47","end":"15:42","startHours":14.780071865145077,"endHours":15.696615241157247,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:10","end":"19:34","startHours":19.16278874520593,"endHours":19.56278874520593,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:22","end":"19:56","startHours":19.36278874520593,"endHours":19.935628355213534,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:07","end":"20:52","startHours":19.11278874520593,"endHours":20.86278874520593,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:02","end":"00:57","startHours":24.030441737108568,"endHours":24.94698511312074,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:37","end":"07:20","startHours":5.614638105023374,"endHours":7.333156935046194,"quality":"inauspicious"},{"name":"Chala","start":"07:20","end":"09:03","startHours":7.333156935046194,"endHours":9.051675765069014,"quality":"neutral"},{"name":"Labha","start":"09:03","end":"10:46","startHours":9.051675765069014,"endHours":10.770194595091832,"quality":"auspicious"},{"name":"Amṛta","start":"10:46","end":"12:29","startHours":10.770194595091832,"endHours":12.488713425114652,"quality":"auspicious"},{"name":"Kāla","start":"12:29","end":"14:12","startHours":12.488713425114652,"endHours":14.207232255137471,"quality":"inauspicious"},{"name":"Śubha","start":"14:12","end":"15:56","startHours":14.207232255137471,"endHours":15.92575108516029,"quality":"auspicious"},{"name":"Roga","start":"15:56","end":"17:39","startHours":15.92575108516029,"endHours":17.64426991518311,"quality":"inauspicious"},{"name":"Udveg","start":"17:39","end":"19:22","startHours":17.64426991518311,"endHours":19.36278874520593,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"19:22","end":"20:39","startHours":19.36278874520593,"endHours":20.64426991518311,"quality":"auspicious"},{"name":"Roga","start":"20:39","end":"21:56","startHours":20.64426991518311,"endHours":21.92575108516029,"quality":"inauspicious"},{"name":"Udveg","start":"21:56","end":"23:12","startHours":21.92575108516029,"endHours":23.20723225513747,"quality":"inauspicious"},{"name":"Chala","start":"23:12","end":"00:29","startHours":23.20723225513747,"endHours":24.488713425114653,"quality":"neutral"},{"name":"Labha","start":"00:29","end":"01:46","startHours":24.488713425114653,"endHours":25.77019459509183,"quality":"auspicious"},{"name":"Amṛta","start":"01:46","end":"03:03","startHours":25.77019459509183,"endHours":27.051675765069014,"quality":"auspicious"},{"name":"Kāla","start":"03:03","end":"04:20","startHours":27.051675765069014,"endHours":28.333156935046194,"quality":"inauspicious"},{"name":"Śubha","start":"04:20","end":"05:37","startHours":28.333156935046194,"endHours":29.614638105023374,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:37","end":"06:37","startHours":5.614638105023374,"endHours":6.614638105023374,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:37","end":"07:37","startHours":6.614638105023374,"endHours":7.614638105023374,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:37","end":"08:37","startHours":7.614638105023374,"endHours":8.614638105023374,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:37","end":"09:37","startHours":8.614638105023374,"endHours":9.614638105023374,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:37","end":"10:37","startHours":9.614638105023374,"endHours":10.614638105023374,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:37","end":"11:37","startHours":10.614638105023374,"endHours":11.614638105023374,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:37","end":"12:37","startHours":11.614638105023374,"endHours":12.614638105023374,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:37","end":"13:37","startHours":12.614638105023374,"endHours":13.614638105023374,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:37","end":"14:37","startHours":13.614638105023374,"endHours":14.614638105023374,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:37","end":"15:37","startHours":14.614638105023374,"endHours":15.614638105023374,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:37","end":"16:37","startHours":15.614638105023374,"endHours":16.614638105023374,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:37","end":"17:37","startHours":16.614638105023374,"endHours":17.614638105023374,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:37","end":"18:37","startHours":17.614638105023374,"endHours":18.614638105023374,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:37","end":"19:37","startHours":18.614638105023374,"endHours":19.614638105023374,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:37","end":"20:37","startHours":19.614638105023374,"endHours":20.614638105023374,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:37","end":"21:37","startHours":20.614638105023374,"endHours":21.614638105023374,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:37","end":"22:37","startHours":21.614638105023374,"endHours":22.614638105023374,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:37","end":"23:37","startHours":22.614638105023374,"endHours":23.614638105023374,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:37","end":"00:37","startHours":23.614638105023374,"endHours":24.614638105023374,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:37","end":"01:37","startHours":24.614638105023374,"endHours":25.614638105023374,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:37","end":"02:37","startHours":25.614638105023374,"endHours":26.614638105023374,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:37","end":"03:37","startHours":26.614638105023374,"endHours":27.614638105023374,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:37","end":"04:37","startHours":27.614638105023374,"endHours":28.614638105023374,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:37","end":"05:37","startHours":28.614638105023374,"endHours":29.614638105023374,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"South-West","rahuVasa":"North-East","anandadiYoga":{"name":"Sushira","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":-18.507900039008348,"eotMinutes":-12.76480550687915,"ayanamsa":23.6445}},"calendars":{"vikram_samvat":2042,"vikram_samvatsara":"Bahudhānya","saka_samvat":1907,"saka_samvatsara":"Krodhana","bengali_samvat":1392,"malayalam_era":1161,"nanakshahi_year":516,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Ṣaṣṭhī · Vikram 2042 Bahudhānya · Śaka 1907 Krodhana"},"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}],"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 January 27, 1985 CE · Perth, Australia · Vidhyamitra","description":"January 27, 1985 CE for Perth, Australia: Śukla Ṣaṣṭhī, sūryodaya 05:37, sūryāsta 19:22.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1985-01-27","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1985-01-27","sa":"https://sa.vidhyamitra.com/city/perth/1985-01-27","hi":"https://hi.vidhyamitra.com/city/perth/1985-01-27","x-default":"https://vidhyamitra.com/city/perth/1985-01-27"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-19T15:50:11.663Z","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":"2026-05-19T15:50:11.663Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-19T15:50:11.663Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}