{"id":"vidhyamitra:city-day:perth:1987-01-05:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1987-01-05","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1987-01-05","date_display":"January 5, 1987 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":1987,"month":1,"day":5,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446800.770833,"kali_year":5088,"ahargana":1858335.2708,"sun":{"sidereal_longitude":260.313,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":324.325,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":64.012,"elapsed_within_tithi_degrees":4.012},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2,"moon_longitude":324.325,"elapsed_within_degrees":4.325},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":224.638},"karana":{"half_tithi_index":10,"name":"Kaulava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":1987,"month":1,"day":5,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2446800.770833,"ahargana":1858335.2708,"kali_year":5088,"ayanamsa_lahiri":23.6716,"grahas":{"sun":{"sidereal_longitude":260.482475,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":327.45337500000005,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false,"latitude":-2.3915},"mars":{"sidereal_longitude":334.0456750000001,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":256.1114749999999,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":325.26227500000005,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":214.20337500000005,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":231.79357500000003,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":356.4544,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":176.4544,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","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":1987,"month":1,"day":5,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446800.770833,"kali_year":5088,"ahargana":1858335.2708,"sun":{"sidereal_longitude":260.313,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":324.325,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":64.012,"elapsed_within_tithi_degrees":4.012},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2,"moon_longitude":324.325,"elapsed_within_degrees":4.325},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":224.638},"karana":{"half_tithi_index":10,"name":"Kaulava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.391,"elongation":64.012},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.391,"opposition_distance":115.988}},"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":"05:17","sunsetLocal":"19:27","solarNoonLocal":"12:22","dayLengthHours":14.162135806880933,"dayLengthDisplay":"14 Hours 09 Mins 44 Secs","nightLengthDisplay":"9 Hours 50 Mins 16 Secs","moonriseLocal":"10:38","moonsetLocal":"23:01","rahuKala":{"name":"Rāhu Kāla","start":"07:03","end":"08:50","startHours":7.056045249489034,"endHours":8.82631222534915,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:36","end":"12:22","startHours":10.596579201209266,"endHours":12.366846177069384,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:08","end":"15:54","startHours":14.137113152929501,"endHours":15.907380128789617,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:35","end":"09:04","startHours":8.590276628567802,"endHours":9.0623478221305,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:53","end":"06:15","startHours":5.87586726558229,"endHours":6.253524220432448,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:54","end":"12:50","startHours":11.894774983506686,"endHours":12.838917370632082,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:24","end":"04:20","startHours":3.3974934993781263,"endHours":4.341635886503521,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:06","end":"05:17","startHours":4.105600289722172,"endHours":5.285778273628917,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:44","end":"15:40","startHours":14.727202144882874,"endHours":15.67134453200827,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:15","end":"19:39","startHours":19.24791408050985,"endHours":19.64791408050985,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:27","end":"20:02","startHours":19.44791408050985,"endHours":20.038003072463223,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:12","end":"20:57","startHours":19.19791408050985,"endHours":20.94791408050985,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:54","end":"00:50","startHours":23.894774983506686,"endHours":24.838917370632082,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:17","end":"07:03","startHours":5.285778273628917,"endHours":7.056045249489034,"quality":"auspicious"},{"name":"Kāla","start":"07:03","end":"08:50","startHours":7.056045249489034,"endHours":8.82631222534915,"quality":"inauspicious"},{"name":"Śubha","start":"08:50","end":"10:36","startHours":8.82631222534915,"endHours":10.596579201209266,"quality":"auspicious"},{"name":"Roga","start":"10:36","end":"12:22","startHours":10.596579201209266,"endHours":12.366846177069384,"quality":"inauspicious"},{"name":"Udveg","start":"12:22","end":"14:08","startHours":12.366846177069384,"endHours":14.137113152929501,"quality":"inauspicious"},{"name":"Chala","start":"14:08","end":"15:54","startHours":14.137113152929501,"endHours":15.907380128789617,"quality":"neutral"},{"name":"Labha","start":"15:54","end":"17:41","startHours":15.907380128789617,"endHours":17.677647104649733,"quality":"auspicious"},{"name":"Amṛta","start":"17:41","end":"19:27","startHours":17.677647104649733,"endHours":19.44791408050985,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"19:27","end":"20:41","startHours":19.44791408050985,"endHours":20.677647104649733,"quality":"neutral"},{"name":"Labha","start":"20:41","end":"21:54","startHours":20.677647104649733,"endHours":21.90738012878962,"quality":"auspicious"},{"name":"Amṛta","start":"21:54","end":"23:08","startHours":21.90738012878962,"endHours":23.1371131529295,"quality":"auspicious"},{"name":"Kāla","start":"23:08","end":"00:22","startHours":23.1371131529295,"endHours":24.366846177069384,"quality":"inauspicious"},{"name":"Śubha","start":"00:22","end":"01:36","startHours":24.366846177069384,"endHours":25.596579201209266,"quality":"auspicious"},{"name":"Roga","start":"01:36","end":"02:50","startHours":25.596579201209266,"endHours":26.82631222534915,"quality":"inauspicious"},{"name":"Udveg","start":"02:50","end":"04:03","startHours":26.82631222534915,"endHours":28.056045249489035,"quality":"inauspicious"},{"name":"Chala","start":"04:03","end":"05:17","startHours":28.056045249489035,"endHours":29.285778273628917,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:17","end":"06:17","startHours":5.285778273628917,"endHours":6.285778273628917,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:17","end":"07:17","startHours":6.285778273628917,"endHours":7.285778273628917,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:17","end":"08:17","startHours":7.285778273628917,"endHours":8.285778273628917,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:17","end":"09:17","startHours":8.285778273628917,"endHours":9.285778273628917,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:17","end":"10:17","startHours":9.285778273628917,"endHours":10.285778273628917,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:17","end":"11:17","startHours":10.285778273628917,"endHours":11.285778273628917,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:17","end":"12:17","startHours":11.285778273628917,"endHours":12.285778273628917,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:17","end":"13:17","startHours":12.285778273628917,"endHours":13.285778273628917,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:17","end":"14:17","startHours":13.285778273628917,"endHours":14.285778273628917,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:17","end":"15:17","startHours":14.285778273628917,"endHours":15.285778273628917,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:17","end":"16:17","startHours":15.285778273628917,"endHours":16.285778273628917,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:17","end":"17:17","startHours":16.285778273628917,"endHours":17.285778273628917,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:17","end":"18:17","startHours":17.285778273628917,"endHours":18.285778273628917,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:17","end":"19:17","startHours":18.285778273628917,"endHours":19.285778273628917,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:17","end":"20:17","startHours":19.285778273628917,"endHours":20.285778273628917,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:17","end":"21:17","startHours":20.285778273628917,"endHours":21.285778273628917,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:17","end":"22:17","startHours":21.285778273628917,"endHours":22.285778273628917,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:17","end":"23:17","startHours":22.285778273628917,"endHours":23.285778273628917,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:17","end":"00:17","startHours":23.285778273628917,"endHours":24.285778273628917,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:17","end":"01:17","startHours":24.285778273628917,"endHours":25.285778273628917,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:17","end":"02:17","startHours":25.285778273628917,"endHours":26.285778273628917,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:17","end":"03:17","startHours":26.285778273628917,"endHours":27.285778273628917,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:17","end":"04:17","startHours":27.285778273628917,"endHours":28.285778273628917,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:17","end":"05:17","startHours":28.285778273628917,"endHours":29.285778273628917,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Ānanda","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-22.68459360504404,"eotMinutes":-5.452770624163118,"ayanamsa":23.6716}},"calendars":{"vikram_samvat":2044,"vikram_samvatsara":"Vikrama","saka_samvat":1909,"saka_samvatsara":"Prabhava","bengali_samvat":1394,"malayalam_era":1163,"nanakshahi_year":518,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","lunar_month_amanta":"Pauṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Ṣaṣṭhī · Vikram 2044 Vikrama · Śaka 1909 Prabhava"},"festivals":[],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — 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 5, 1987 CE · Perth, Australia · Vidhyamitra","description":"January 5, 1987 CE for Perth, Australia: Śukla Ṣaṣṭhī, sūryodaya 05:17, sūryāsta 19:27.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1987-01-05","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1987-01-05","sa":"https://sa.vidhyamitra.com/city/perth/1987-01-05","hi":"https://hi.vidhyamitra.com/city/perth/1987-01-05","x-default":"https://vidhyamitra.com/city/perth/1987-01-05"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T13:06:31.424Z","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":"2026-06-02T13:06:31.424Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T13:06:31.424Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}