{"id":"vidhyamitra:city-day:perth:2107-01-28:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2107-01-28","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2107-01-28","date_display":"January 28, 2107 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":2107,"month":1,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2490652.770833,"kali_year":5208,"ahargana":1902187.2708,"sun":{"sidereal_longitude":281.8185,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":327.337,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":45.5185,"elapsed_within_tithi_degrees":9.5185},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3,"moon_longitude":327.337,"elapsed_within_degrees":7.337},"yoga":{"number":19,"name":"Parigha","sum_longitude":249.1554},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":2107,"month":1,"day":28,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2490652.770833,"ahargana":1902187.2708,"kali_year":5208,"ayanamsa_lahiri":25.3487,"grahas":{"sun":{"sidereal_longitude":282.0954059999999,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"moon":{"sidereal_longitude":324.34250599999996,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":false,"latitude":3.215},"mars":{"sidereal_longitude":293.248206,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":290.87700599999994,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":true},"jupiter":{"sidereal_longitude":10.34040600000003,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"venus":{"sidereal_longitude":238.653506,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":255.54850599999997,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":192.9644,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":12.9644,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"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":2107,"month":1,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2490652.770833,"kali_year":5208,"ahargana":1902187.2708,"sun":{"sidereal_longitude":281.8185,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":327.337,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":45.5185,"elapsed_within_tithi_degrees":9.5185},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3,"moon_longitude":327.337,"elapsed_within_degrees":7.337},"yoga":{"number":19,"name":"Parigha","sum_longitude":249.1554},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.215,"elongation":45.519},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.215,"opposition_distance":134.481}},"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":"12:30","dayLengthHours":13.738571802023138,"dayLengthDisplay":"13 Hours 44 Mins 19 Secs","nightLengthDisplay":"10 Hours 15 Mins 41 Secs","moonriseLocal":"09:06","moonsetLocal":"21:31","rahuKala":{"name":"Rāhu Kāla","start":"10:46","end":"12:30","startHours":10.77488905866154,"endHours":12.492210533914431,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:56","end":"17:39","startHours":15.926853484420215,"endHours":17.64417495967311,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:20","end":"09:03","startHours":7.340246108155754,"endHours":9.057567583408646,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:50","end":"09:17","startHours":8.828591386708261,"endHours":9.286543780109032,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:12","end":"06:34","startHours":6.195365124653826,"endHours":6.561727039374443,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:02","end":"12:57","startHours":12.034258140513659,"endHours":12.950162927315203,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:47","end":"04:42","startHours":3.791115059299777,"endHours":4.7070198461013195,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:29","end":"05:37","startHours":4.4780436494009335,"endHours":5.622924632902862,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:47","end":"15:42","startHours":14.781972500918288,"endHours":15.69787728771983,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:10","end":"19:34","startHours":19.161496434926,"endHours":19.561496434926,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:22","end":"19:56","startHours":19.361496434926,"endHours":19.933936926676964,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:07","end":"20:52","startHours":19.111496434926,"endHours":20.861496434926,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:02","end":"00:57","startHours":24.03425814051366,"endHours":24.9501629273152,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"05:37","end":"07:20","startHours":5.622924632902862,"endHours":7.340246108155754,"quality":"neutral"},{"name":"Labha","start":"07:20","end":"09:03","startHours":7.340246108155754,"endHours":9.057567583408646,"quality":"auspicious"},{"name":"Amṛta","start":"09:03","end":"10:46","startHours":9.057567583408646,"endHours":10.77488905866154,"quality":"auspicious"},{"name":"Kāla","start":"10:46","end":"12:30","startHours":10.77488905866154,"endHours":12.492210533914431,"quality":"inauspicious"},{"name":"Śubha","start":"12:30","end":"14:13","startHours":12.492210533914431,"endHours":14.209532009167322,"quality":"auspicious"},{"name":"Roga","start":"14:13","end":"15:56","startHours":14.209532009167322,"endHours":15.926853484420215,"quality":"inauspicious"},{"name":"Udveg","start":"15:56","end":"17:39","startHours":15.926853484420215,"endHours":17.64417495967311,"quality":"inauspicious"},{"name":"Chala","start":"17:39","end":"19:22","startHours":17.64417495967311,"endHours":19.361496434926,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"19:22","end":"20:39","startHours":19.361496434926,"endHours":20.64417495967311,"quality":"inauspicious"},{"name":"Udveg","start":"20:39","end":"21:56","startHours":20.64417495967311,"endHours":21.926853484420214,"quality":"inauspicious"},{"name":"Chala","start":"21:56","end":"23:13","startHours":21.926853484420214,"endHours":23.209532009167322,"quality":"neutral"},{"name":"Labha","start":"23:13","end":"00:30","startHours":23.209532009167322,"endHours":24.49221053391443,"quality":"auspicious"},{"name":"Amṛta","start":"00:30","end":"01:46","startHours":24.49221053391443,"endHours":25.77488905866154,"quality":"auspicious"},{"name":"Kāla","start":"01:46","end":"03:03","startHours":25.77488905866154,"endHours":27.057567583408648,"quality":"inauspicious"},{"name":"Śubha","start":"03:03","end":"04:20","startHours":27.057567583408648,"endHours":28.340246108155753,"quality":"auspicious"},{"name":"Roga","start":"04:20","end":"05:37","startHours":28.340246108155753,"endHours":29.622924632902862,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:37","end":"06:37","startHours":5.622924632902862,"endHours":6.622924632902862,"planetary_lord":"Venus"},{"name":"Hora 2","start":"06:37","end":"07:37","startHours":6.622924632902862,"endHours":7.622924632902862,"planetary_lord":"Sun"},{"name":"Hora 3","start":"07:37","end":"08:37","startHours":7.622924632902862,"endHours":8.622924632902862,"planetary_lord":"Mars"},{"name":"Hora 4","start":"08:37","end":"09:37","startHours":8.622924632902862,"endHours":9.622924632902862,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"09:37","end":"10:37","startHours":9.622924632902862,"endHours":10.622924632902862,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"10:37","end":"11:37","startHours":10.622924632902862,"endHours":11.622924632902862,"planetary_lord":"Moon"},{"name":"Hora 7","start":"11:37","end":"12:37","startHours":11.622924632902862,"endHours":12.622924632902862,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"12:37","end":"13:37","startHours":12.622924632902862,"endHours":13.622924632902862,"planetary_lord":"Venus"},{"name":"Hora 9","start":"13:37","end":"14:37","startHours":13.622924632902862,"endHours":14.622924632902862,"planetary_lord":"Sun"},{"name":"Hora 10","start":"14:37","end":"15:37","startHours":14.622924632902862,"endHours":15.622924632902862,"planetary_lord":"Mars"},{"name":"Hora 11","start":"15:37","end":"16:37","startHours":15.622924632902862,"endHours":16.622924632902862,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"16:37","end":"17:37","startHours":16.622924632902862,"endHours":17.622924632902862,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"17:37","end":"18:37","startHours":17.622924632902862,"endHours":18.622924632902862,"planetary_lord":"Moon"},{"name":"Hora 14","start":"18:37","end":"19:37","startHours":18.622924632902862,"endHours":19.622924632902862,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"19:37","end":"20:37","startHours":19.622924632902862,"endHours":20.622924632902862,"planetary_lord":"Venus"},{"name":"Hora 16","start":"20:37","end":"21:37","startHours":20.622924632902862,"endHours":21.622924632902862,"planetary_lord":"Sun"},{"name":"Hora 17","start":"21:37","end":"22:37","startHours":21.622924632902862,"endHours":22.622924632902862,"planetary_lord":"Mars"},{"name":"Hora 18","start":"22:37","end":"23:37","startHours":22.622924632902862,"endHours":23.622924632902862,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"23:37","end":"00:37","startHours":23.622924632902862,"endHours":24.622924632902862,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"00:37","end":"01:37","startHours":24.622924632902862,"endHours":25.622924632902862,"planetary_lord":"Moon"},{"name":"Hora 21","start":"01:37","end":"02:37","startHours":25.622924632902862,"endHours":26.622924632902862,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"02:37","end":"03:37","startHours":26.622924632902862,"endHours":27.622924632902862,"planetary_lord":"Venus"},{"name":"Hora 23","start":"03:37","end":"04:37","startHours":27.622924632902862,"endHours":28.622924632902862,"planetary_lord":"Sun"},{"name":"Hora 24","start":"04:37","end":"05:37","startHours":28.622924632902862,"endHours":29.622924632902862,"planetary_lord":"Mars"}],"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":"West (Paścim)","chandraVasa":"South","rahuVasa":"South-East","anandadiYoga":{"name":"Mṛtyu","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":-18.407813102020285,"eotMinutes":-12.974632034865841,"ayanamsa":25.3487}},"calendars":{"vikram_samvat":2164,"vikram_samvatsara":"Vikrama","saka_samvat":2029,"saka_samvatsara":"Prabhava","bengali_samvat":1514,"malayalam_era":1283,"nanakshahi_year":638,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Caturthī · Vikram 2164 Vikrama · Śaka 2029 Prabhava"},"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},{"id":"vinayaka-chaturthi","name":"Vināyaka Caturthī (monthly)","name_sanskrit":"विनायक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Śukla-pakṣa Caturthī; auspicious for new ventures.","vrata":true,"detection":{"tithi_number":4,"tithi_paksha":"Śukla"},"precedence":6}],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — 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 28, 2107 CE · Perth, Australia · Vidhyamitra","description":"January 28, 2107 CE for Perth, Australia: Śukla Caturthī, sūryodaya 05:37, sūryāsta 19:22.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2107-01-28","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2107-01-28","sa":"https://sa.vidhyamitra.com/city/perth/2107-01-28","hi":"https://hi.vidhyamitra.com/city/perth/2107-01-28","x-default":"https://vidhyamitra.com/city/perth/2107-01-28"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-21T16:27:58.648Z","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":"2026-05-21T16:27:58.648Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-21T16:27:58.648Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}