{"id":"vidhyamitra:city-day:perth:2155-12-28:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2155-12-28","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2155-12-28","date_display":"December 28, 2155 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":2155,"month":12,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2508518.770833,"kali_year":5257,"ahargana":1920053.2708,"sun":{"sidereal_longitude":249.2824,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":298.0872,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":48.8048,"elapsed_within_tithi_degrees":0.8048},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2,"moon_longitude":298.0872,"elapsed_within_degrees":4.7539},"yoga":{"number":15,"name":"Vajra","sum_longitude":187.3696},"karana":{"half_tithi_index":8,"name":"Bava"},"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":2155,"month":12,"day":28,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2508518.770833,"ahargana":1920053.2708,"kali_year":5257,"ayanamsa_lahiri":26.032,"grahas":{"sun":{"sidereal_longitude":249.94609300000002,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"moon":{"sidereal_longitude":302.128693,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false,"latitude":-2.1283},"mars":{"sidereal_longitude":281.20869300000004,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":227.92819299999996,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":67.23589299999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":true},"venus":{"sidereal_longitude":289.5252929999999,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":143.18309299999999,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":326.3378,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":146.3378,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","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":2155,"month":12,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2508518.770833,"kali_year":5257,"ahargana":1920053.2708,"sun":{"sidereal_longitude":249.2824,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":298.0872,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":48.8048,"elapsed_within_tithi_degrees":0.8048},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2,"moon_longitude":298.0872,"elapsed_within_degrees":4.7539},"yoga":{"number":15,"name":"Vajra","sum_longitude":187.3696},"karana":{"half_tithi_index":8,"name":"Bava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.128,"elongation":48.805},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.128,"opposition_distance":131.195}},"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":"05:12","sunsetLocal":"19:25","solarNoonLocal":"12:18","dayLengthHours":14.225935647946121,"dayLengthDisplay":"14 Hours 13 Mins 33 Secs","nightLengthDisplay":"9 Hours 46 Mins 27 Secs","moonriseLocal":"09:14","moonsetLocal":"22:21","rahuKala":{"name":"Rāhu Kāla","start":"17:39","end":"19:25","startHours":17.642144275717918,"endHours":19.420386231711184,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:18","end":"14:05","startHours":12.307418407738123,"endHours":14.085660363731389,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:52","end":"17:39","startHours":15.863902319724653,"endHours":17.642144275717918,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:31","end":"08:59","startHours":8.513835568285824,"endHours":8.988033423217361,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:47","end":"06:10","startHours":5.787197902429485,"endHours":6.166556186374715,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:50","end":"12:47","startHours":11.833220552806585,"endHours":12.78161626266966,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:18","end":"04:15","startHours":3.2976591640389135,"endHours":4.246054873901988,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:01","end":"05:12","startHours":4.008955946436219,"endHours":5.194450583765063,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:41","end":"15:38","startHours":14.678407682395811,"endHours":15.626803392258886,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:13","end":"19:37","startHours":19.220386231711185,"endHours":19.620386231711183,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:25","end":"20:01","startHours":19.420386231711184,"endHours":20.013133550375606,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:10","end":"20:55","startHours":19.170386231711184,"endHours":20.920386231711184,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:50","end":"00:47","startHours":23.833220552806583,"endHours":24.78161626266966,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:12","end":"06:58","startHours":5.194450583765063,"endHours":6.972692539758328,"quality":"inauspicious"},{"name":"Chala","start":"06:58","end":"08:45","startHours":6.972692539758328,"endHours":8.750934495751594,"quality":"neutral"},{"name":"Labha","start":"08:45","end":"10:32","startHours":8.750934495751594,"endHours":10.529176451744858,"quality":"auspicious"},{"name":"Amṛta","start":"10:32","end":"12:18","startHours":10.529176451744858,"endHours":12.307418407738123,"quality":"auspicious"},{"name":"Kāla","start":"12:18","end":"14:05","startHours":12.307418407738123,"endHours":14.085660363731389,"quality":"inauspicious"},{"name":"Śubha","start":"14:05","end":"15:52","startHours":14.085660363731389,"endHours":15.863902319724653,"quality":"auspicious"},{"name":"Roga","start":"15:52","end":"17:39","startHours":15.863902319724653,"endHours":17.642144275717918,"quality":"inauspicious"},{"name":"Udveg","start":"17:39","end":"19:25","startHours":17.642144275717918,"endHours":19.420386231711184,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"19:25","end":"20:39","startHours":19.420386231711184,"endHours":20.642144275717918,"quality":"auspicious"},{"name":"Roga","start":"20:39","end":"21:52","startHours":20.642144275717918,"endHours":21.863902319724655,"quality":"inauspicious"},{"name":"Udveg","start":"21:52","end":"23:05","startHours":21.863902319724655,"endHours":23.08566036373139,"quality":"inauspicious"},{"name":"Chala","start":"23:05","end":"00:18","startHours":23.08566036373139,"endHours":24.307418407738123,"quality":"neutral"},{"name":"Labha","start":"00:18","end":"01:32","startHours":24.307418407738123,"endHours":25.52917645174486,"quality":"auspicious"},{"name":"Amṛta","start":"01:32","end":"02:45","startHours":25.52917645174486,"endHours":26.750934495751594,"quality":"auspicious"},{"name":"Kāla","start":"02:45","end":"03:58","startHours":26.750934495751594,"endHours":27.972692539758327,"quality":"inauspicious"},{"name":"Śubha","start":"03:58","end":"05:12","startHours":27.972692539758327,"endHours":29.19445058376506,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:12","end":"06:12","startHours":5.194450583765063,"endHours":6.194450583765063,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:12","end":"07:12","startHours":6.194450583765063,"endHours":7.194450583765063,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:12","end":"08:12","startHours":7.194450583765063,"endHours":8.194450583765063,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:12","end":"09:12","startHours":8.194450583765063,"endHours":9.194450583765063,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:12","end":"10:12","startHours":9.194450583765063,"endHours":10.194450583765063,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:12","end":"11:12","startHours":10.194450583765063,"endHours":11.194450583765063,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:12","end":"12:12","startHours":11.194450583765063,"endHours":12.194450583765063,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:12","end":"13:12","startHours":12.194450583765063,"endHours":13.194450583765063,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:12","end":"14:12","startHours":13.194450583765063,"endHours":14.194450583765063,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:12","end":"15:12","startHours":14.194450583765063,"endHours":15.194450583765063,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:12","end":"16:12","startHours":15.194450583765063,"endHours":16.19445058376506,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:12","end":"17:12","startHours":16.19445058376506,"endHours":17.19445058376506,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:12","end":"18:12","startHours":17.19445058376506,"endHours":18.19445058376506,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:12","end":"19:12","startHours":18.19445058376506,"endHours":19.19445058376506,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:12","end":"20:12","startHours":19.19445058376506,"endHours":20.19445058376506,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:12","end":"21:12","startHours":20.19445058376506,"endHours":21.19445058376506,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:12","end":"22:12","startHours":21.19445058376506,"endHours":22.19445058376506,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:12","end":"23:12","startHours":22.19445058376506,"endHours":23.19445058376506,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:12","end":"00:12","startHours":23.19445058376506,"endHours":24.19445058376506,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:12","end":"01:12","startHours":24.19445058376506,"endHours":25.19445058376506,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:12","end":"02:12","startHours":25.19445058376506,"endHours":26.19445058376506,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:12","end":"03:12","startHours":26.19445058376506,"endHours":27.19445058376506,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:12","end":"04:12","startHours":27.19445058376506,"endHours":28.19445058376506,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:12","end":"05:12","startHours":28.19445058376506,"endHours":29.19445058376506,"planetary_lord":"Jupiter"}],"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","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Gada","quality":"Inauspicious"},"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":-23.301497557388252,"eotMinutes":-1.8871044642874448,"ayanamsa":26.032}},"calendars":{"vikram_samvat":2212,"vikram_samvatsara":"Vibhava","saka_samvat":2077,"saka_samvatsara":"Rākṣasa","bengali_samvat":1562,"malayalam_era":1331,"nanakshahi_year":686,"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 Pañcamī · Vikram 2212 Vibhava · Śaka 2077 Rākṣasa"},"festivals":[],"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 December 28, 2155 CE · Perth, Australia · Vidhyamitra","description":"December 28, 2155 CE for Perth, Australia: Śukla Pañcamī, sūryodaya 05:12, sūryāsta 19:25.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2155-12-28","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2155-12-28","sa":"https://sa.vidhyamitra.com/city/perth/2155-12-28","hi":"https://hi.vidhyamitra.com/city/perth/2155-12-28","x-default":"https://vidhyamitra.com/city/perth/2155-12-28"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T02:23:17.533Z","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":"2026-05-31T02:23:17.533Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T02:23:17.533Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}