{"id":"vidhyamitra:city-day:perth:2027-02-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2027-02-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2027-02-01","date_display":"February 1, 2027 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":2027,"month":2,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2461437.770833,"kali_year":5128,"ahargana":1872972.2708,"sun":{"sidereal_longitude":287.6503,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":223.9853,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":25,"name":"Daśamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Daśamī","elongation_degrees":296.335,"elapsed_within_tithi_degrees":8.335},"nakshatra":{"number":17,"name":"Anurādhā","pada":4,"moon_longitude":223.9853,"elapsed_within_degrees":10.652},"yoga":{"number":12,"name":"Dhruva","sum_longitude":151.6356},"karana":{"half_tithi_index":49,"name":"Viṣṭi"},"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":2027,"month":2,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2461437.770833,"ahargana":1872972.2708,"kali_year":5128,"ayanamsa_lahiri":24.2314,"grahas":{"sun":{"sidereal_longitude":287.69963400000006,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"moon":{"sidereal_longitude":226.72953400000006,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false,"latitude":-4.3832},"mars":{"sidereal_longitude":132.752834,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":305.38993400000004,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":118.892834,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":4},"retrograde":true},"venus":{"sidereal_longitude":242.40213400000005,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":346.106934,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":300.9157,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":120.9157,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","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":2027,"month":2,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2461437.770833,"kali_year":5128,"ahargana":1872972.2708,"sun":{"sidereal_longitude":287.6503,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":223.9853,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":25,"name":"Daśamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Daśamī","elongation_degrees":296.335,"elapsed_within_tithi_degrees":8.335},"nakshatra":{"number":17,"name":"Anurādhā","pada":4,"moon_longitude":223.9853,"elapsed_within_degrees":10.652},"yoga":{"number":12,"name":"Dhruva","sum_longitude":151.6356},"karana":{"half_tithi_index":49,"name":"Viṣṭi"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.383,"elongation":63.665},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.383,"opposition_distance":116.335}},"eclipse_window_40days":[{"offset_days":20,"type":"lunar","occurs":true,"moon_latitude":-0.791,"opposition_distance":1.992}]},"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":"05:41","sunsetLocal":"19:19","solarNoonLocal":"12:30","dayLengthHours":13.625120399484235,"dayLengthDisplay":"13 Hours 37 Mins 30 Secs","nightLengthDisplay":"10 Hours 22 Mins 30 Secs","moonriseLocal":"01:25","moonsetLocal":"15:28","rahuKala":{"name":"Rāhu Kāla","start":"07:24","end":"09:06","startHours":7.394702318816673,"endHours":9.097842368752202,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:48","end":"12:30","startHours":10.800982418687731,"endHours":12.504122468623262,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:12","end":"15:55","startHours":14.207262518558789,"endHours":15.91040256849432,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:52","end":"09:19","startHours":8.8707570287608,"endHours":9.324927708743607,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:16","end":"06:37","startHours":6.259275618859653,"endHours":6.6226121628459,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:03","end":"12:57","startHours":12.049951788640453,"endHours":12.958293148606067,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:52","end":"04:47","startHours":3.874879548949912,"endHours":4.783220908915528,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:33","end":"05:41","startHours":4.556135568924123,"endHours":5.691562268881143,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:46","end":"15:41","startHours":14.7749758685373,"endHours":15.683317228502917,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:07","end":"19:31","startHours":19.116682668365378,"endHours":19.516682668365377,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:19","end":"19:53","startHours":19.316682668365377,"endHours":19.88439601834389,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:04","end":"20:49","startHours":19.066682668365377,"endHours":20.816682668365377,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:03","end":"00:57","startHours":24.04995178864045,"endHours":24.958293148606067,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:41","end":"07:24","startHours":5.691562268881143,"endHours":7.394702318816673,"quality":"auspicious"},{"name":"Kāla","start":"07:24","end":"09:06","startHours":7.394702318816673,"endHours":9.097842368752202,"quality":"inauspicious"},{"name":"Śubha","start":"09:06","end":"10:48","startHours":9.097842368752202,"endHours":10.800982418687731,"quality":"auspicious"},{"name":"Roga","start":"10:48","end":"12:30","startHours":10.800982418687731,"endHours":12.504122468623262,"quality":"inauspicious"},{"name":"Udveg","start":"12:30","end":"14:12","startHours":12.504122468623262,"endHours":14.207262518558789,"quality":"inauspicious"},{"name":"Chala","start":"14:12","end":"15:55","startHours":14.207262518558789,"endHours":15.91040256849432,"quality":"neutral"},{"name":"Labha","start":"15:55","end":"17:37","startHours":15.91040256849432,"endHours":17.61354261842985,"quality":"auspicious"},{"name":"Amṛta","start":"17:37","end":"19:19","startHours":17.61354261842985,"endHours":19.316682668365377,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"19:19","end":"20:37","startHours":19.316682668365377,"endHours":20.613542618429847,"quality":"neutral"},{"name":"Labha","start":"20:37","end":"21:55","startHours":20.613542618429847,"endHours":21.91040256849432,"quality":"auspicious"},{"name":"Amṛta","start":"21:55","end":"23:12","startHours":21.91040256849432,"endHours":23.20726251855879,"quality":"auspicious"},{"name":"Kāla","start":"23:12","end":"00:30","startHours":23.20726251855879,"endHours":24.504122468623258,"quality":"inauspicious"},{"name":"Śubha","start":"00:30","end":"01:48","startHours":24.504122468623258,"endHours":25.80098241868773,"quality":"auspicious"},{"name":"Roga","start":"01:48","end":"03:06","startHours":25.80098241868773,"endHours":27.0978423687522,"quality":"inauspicious"},{"name":"Udveg","start":"03:06","end":"04:24","startHours":27.0978423687522,"endHours":28.39470231881667,"quality":"inauspicious"},{"name":"Chala","start":"04:24","end":"05:41","startHours":28.39470231881667,"endHours":29.691562268881142,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:41","end":"06:41","startHours":5.691562268881143,"endHours":6.691562268881143,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:41","end":"07:41","startHours":6.691562268881143,"endHours":7.691562268881143,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:41","end":"08:41","startHours":7.691562268881143,"endHours":8.691562268881142,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:41","end":"09:41","startHours":8.691562268881142,"endHours":9.691562268881142,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:41","end":"10:41","startHours":9.691562268881142,"endHours":10.691562268881142,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:41","end":"11:41","startHours":10.691562268881142,"endHours":11.691562268881142,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:41","end":"12:41","startHours":11.691562268881142,"endHours":12.691562268881142,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:41","end":"13:41","startHours":12.691562268881142,"endHours":13.691562268881142,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:41","end":"14:41","startHours":13.691562268881142,"endHours":14.691562268881142,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:41","end":"15:41","startHours":14.691562268881142,"endHours":15.691562268881142,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:41","end":"16:41","startHours":15.691562268881142,"endHours":16.691562268881142,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:41","end":"17:41","startHours":16.691562268881142,"endHours":17.691562268881142,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:41","end":"18:41","startHours":17.691562268881142,"endHours":18.691562268881142,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:41","end":"19:41","startHours":18.691562268881142,"endHours":19.691562268881142,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:41","end":"20:41","startHours":19.691562268881142,"endHours":20.691562268881142,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:41","end":"21:41","startHours":20.691562268881142,"endHours":21.691562268881142,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:41","end":"22:41","startHours":21.691562268881142,"endHours":22.691562268881142,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:41","end":"23:41","startHours":22.691562268881142,"endHours":23.691562268881142,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:41","end":"00:41","startHours":23.691562268881142,"endHours":24.691562268881142,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:41","end":"01:41","startHours":24.691562268881142,"endHours":25.691562268881142,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:41","end":"02:41","startHours":25.691562268881142,"endHours":26.691562268881142,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:41","end":"03:41","startHours":26.691562268881142,"endHours":27.691562268881142,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:41","end":"04:41","startHours":27.691562268881142,"endHours":28.691562268881142,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:41","end":"05:41","startHours":28.691562268881142,"endHours":29.691562268881142,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-East","rahuVasa":"North-East","anandadiYoga":{"name":"Amṛta","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":-17.211090194760175,"eotMinutes":-13.689348117395623,"ayanamsa":24.2314}},"calendars":{"vikram_samvat":2084,"vikram_samvatsara":"Raudra","saka_samvat":1949,"saka_samvatsara":"Plavaṅga","bengali_samvat":1434,"malayalam_era":1203,"nanakshahi_year":558,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Kṛṣṇa Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Kṛṣṇa Daśamī · Vikram 2084 Raudra · Śaka 1949 Plavaṅga"},"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":"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 February 1, 2027 CE · Perth, Australia · Vidhyamitra","description":"February 1, 2027 CE for Perth, Australia: Kṛṣṇa Daśamī, sūryodaya 05:41, sūryāsta 19:19.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2027-02-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2027-02-01","sa":"https://sa.vidhyamitra.com/city/perth/2027-02-01","hi":"https://hi.vidhyamitra.com/city/perth/2027-02-01","x-default":"https://vidhyamitra.com/city/perth/2027-02-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T23:22:44.736Z","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":"2026-05-14T23:22:44.736Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T23:22:44.736Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}