{"id":"vidhyamitra:city-day:perth:2018-02-06:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2018-02-06","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2018-02-06","date_display":"February 6, 2018 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":2018,"month":2,"day":6,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458155.770833,"kali_year":5119,"ahargana":1869690.2708,"sun":{"sidereal_longitude":293.0903,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":182.4247,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":249.3344,"elapsed_within_tithi_degrees":9.3344},"nakshatra":{"number":14,"name":"Citrā","pada":3,"moon_longitude":182.4247,"elapsed_within_degrees":9.0913},"yoga":{"number":9,"name":"Śūla","sum_longitude":115.5149},"karana":{"half_tithi_index":41,"name":"Vaṇija"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":2018,"month":2,"day":6,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2458155.770833,"ahargana":1869690.2708,"kali_year":5119,"ayanamsa_lahiri":24.1058,"grahas":{"sun":{"sidereal_longitude":293.08393,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"moon":{"sidereal_longitude":184.44763,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":false,"latitude":4.1602},"mars":{"sidereal_longitude":222.03313000000003,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":284.59563,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":207.42763000000002,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":299.48582999999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":251.08713,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":114.8119,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":294.8119,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","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":2018,"month":2,"day":6,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458155.770833,"kali_year":5119,"ahargana":1869690.2708,"sun":{"sidereal_longitude":293.0903,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":182.4247,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":249.3344,"elapsed_within_tithi_degrees":9.3344},"nakshatra":{"number":14,"name":"Citrā","pada":3,"moon_longitude":182.4247,"elapsed_within_degrees":9.0913},"yoga":{"number":9,"name":"Śūla","sum_longitude":115.5149},"karana":{"half_tithi_index":41,"name":"Vaṇija"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.16,"elongation":110.666},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.16,"opposition_distance":69.334}},"eclipse_window_40days":[{"offset_days":10,"type":"solar","occurs":true,"moon_latitude":-0.855,"elongation":1.98}]},"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":"05:46","sunsetLocal":"19:15","solarNoonLocal":"12:31","dayLengthHours":13.482812648336115,"dayLengthDisplay":"13 Hours 28 Mins 58 Secs","nightLengthDisplay":"10 Hours 31 Mins 02 Secs","moonriseLocal":"22:46","moonsetLocal":"11:47","rahuKala":{"name":"Rāhu Kāla","start":"15:53","end":"17:34","startHours":15.884925380708651,"endHours":17.570276961750665,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:09","end":"10:50","startHours":9.143519056540594,"endHours":10.828870637582607,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:31","end":"14:12","startHours":12.51422221862462,"endHours":14.199573799666634,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:55","end":"09:22","startHours":8.918805512401658,"endHours":9.368232600679528,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:20","end":"06:42","startHours":6.334599754803903,"endHours":6.694141425426199,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:04","end":"12:58","startHours":12.06479513034675,"endHours":12.963649306902491,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:59","end":"04:52","startHours":3.9751075413450825,"endHours":4.873961717900824,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:39","end":"05:46","startHours":4.6492481737618885,"endHours":5.772815894456564,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:46","end":"15:40","startHours":14.761357660013974,"endHours":15.660211836569715,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:03","end":"19:27","startHours":19.05562854279268,"endHours":19.455628542792677,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:15","end":"19:49","startHours":19.255628542792678,"endHours":19.817412403140015,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:00","end":"20:45","startHours":19.005628542792678,"endHours":20.755628542792678,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:04","end":"00:58","startHours":24.06479513034675,"endHours":24.963649306902493,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:46","end":"07:27","startHours":5.772815894456564,"endHours":7.458167475498579,"quality":"inauspicious"},{"name":"Udveg","start":"07:27","end":"09:09","startHours":7.458167475498579,"endHours":9.143519056540594,"quality":"inauspicious"},{"name":"Chala","start":"09:09","end":"10:50","startHours":9.143519056540594,"endHours":10.828870637582607,"quality":"neutral"},{"name":"Labha","start":"10:50","end":"12:31","startHours":10.828870637582607,"endHours":12.51422221862462,"quality":"auspicious"},{"name":"Amṛta","start":"12:31","end":"14:12","startHours":12.51422221862462,"endHours":14.199573799666634,"quality":"auspicious"},{"name":"Kāla","start":"14:12","end":"15:53","startHours":14.199573799666634,"endHours":15.884925380708651,"quality":"inauspicious"},{"name":"Śubha","start":"15:53","end":"17:34","startHours":15.884925380708651,"endHours":17.570276961750665,"quality":"auspicious"},{"name":"Roga","start":"17:34","end":"19:15","startHours":17.570276961750665,"endHours":19.255628542792678,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"19:15","end":"20:34","startHours":19.255628542792678,"endHours":20.570276961750665,"quality":"inauspicious"},{"name":"Śubha","start":"20:34","end":"21:53","startHours":20.570276961750665,"endHours":21.88492538070865,"quality":"auspicious"},{"name":"Roga","start":"21:53","end":"23:12","startHours":21.88492538070865,"endHours":23.199573799666634,"quality":"inauspicious"},{"name":"Udveg","start":"23:12","end":"00:31","startHours":23.199573799666634,"endHours":24.51422221862462,"quality":"inauspicious"},{"name":"Chala","start":"00:31","end":"01:50","startHours":24.51422221862462,"endHours":25.828870637582607,"quality":"neutral"},{"name":"Labha","start":"01:50","end":"03:09","startHours":25.828870637582607,"endHours":27.14351905654059,"quality":"auspicious"},{"name":"Amṛta","start":"03:09","end":"04:27","startHours":27.14351905654059,"endHours":28.458167475498577,"quality":"auspicious"},{"name":"Kāla","start":"04:27","end":"05:46","startHours":28.458167475498577,"endHours":29.772815894456564,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:46","end":"06:46","startHours":5.772815894456564,"endHours":6.772815894456564,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:46","end":"07:46","startHours":6.772815894456564,"endHours":7.772815894456564,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:46","end":"08:46","startHours":7.772815894456564,"endHours":8.772815894456564,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:46","end":"09:46","startHours":8.772815894456564,"endHours":9.772815894456564,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:46","end":"10:46","startHours":9.772815894456564,"endHours":10.772815894456564,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:46","end":"11:46","startHours":10.772815894456564,"endHours":11.772815894456564,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:46","end":"12:46","startHours":11.772815894456564,"endHours":12.772815894456564,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:46","end":"13:46","startHours":12.772815894456564,"endHours":13.772815894456564,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:46","end":"14:46","startHours":13.772815894456564,"endHours":14.772815894456564,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:46","end":"15:46","startHours":14.772815894456564,"endHours":15.772815894456564,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:46","end":"16:46","startHours":15.772815894456564,"endHours":16.772815894456564,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:46","end":"17:46","startHours":16.772815894456564,"endHours":17.772815894456564,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:46","end":"18:46","startHours":17.772815894456564,"endHours":18.772815894456564,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:46","end":"19:46","startHours":18.772815894456564,"endHours":19.772815894456564,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:46","end":"20:46","startHours":19.772815894456564,"endHours":20.772815894456564,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:46","end":"21:46","startHours":20.772815894456564,"endHours":21.772815894456564,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:46","end":"22:46","startHours":21.772815894456564,"endHours":22.772815894456564,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:46","end":"23:46","startHours":22.772815894456564,"endHours":23.772815894456564,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:46","end":"00:46","startHours":23.772815894456564,"endHours":24.772815894456564,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:46","end":"01:46","startHours":24.772815894456564,"endHours":25.772815894456564,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:46","end":"02:46","startHours":25.772815894456564,"endHours":26.772815894456564,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:46","end":"03:46","startHours":26.772815894456564,"endHours":27.772815894456564,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:46","end":"04:46","startHours":27.772815894456564,"endHours":28.772815894456564,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:46","end":"05:46","startHours":28.772815894456564,"endHours":29.772815894456564,"planetary_lord":"Saturn"}],"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":["Meṣa","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"North","rahuVasa":"North","anandadiYoga":{"name":"Mausala","quality":"Inauspicious"},"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":-15.68141516031268,"eotMinutes":-14.295333117477217,"ayanamsa":24.1058}},"calendars":{"vikram_samvat":2075,"vikram_samvatsara":"Virodhakṛt","saka_samvat":1940,"saka_samvatsara":"Vilambī","bengali_samvat":1425,"malayalam_era":1194,"nanakshahi_year":549,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Kṛṣṇa Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Kṛṣṇa Ṣaṣṭhī · Vikram 2075 Virodhakṛt · Śaka 1940 Vilambī"},"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":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — 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 February 6, 2018 CE · Perth, Australia · Vidhyamitra","description":"February 6, 2018 CE for Perth, Australia: Kṛṣṇa Ṣaṣṭhī, sūryodaya 05:46, sūryāsta 19:15.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2018-02-06","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2018-02-06","sa":"https://sa.vidhyamitra.com/city/perth/2018-02-06","hi":"https://hi.vidhyamitra.com/city/perth/2018-02-06","x-default":"https://vidhyamitra.com/city/perth/2018-02-06"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T06:08:27.323Z","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":"2026-05-15T06:08:27.323Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T06:08:27.323Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}