{"id":"vidhyamitra:city-day:perth:2137-02-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2137-02-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2137-02-20","date_display":"February 20, 2137 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":2137,"month":2,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2501633.770833,"kali_year":5238,"ahargana":1913168.2708,"sun":{"sidereal_longitude":305.5015,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":304.5297,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":359.0282,"elapsed_within_tithi_degrees":11.0282},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4,"moon_longitude":304.5297,"elapsed_within_degrees":11.1964},"yoga":{"number":19,"name":"Parigha","sum_longitude":250.0312},"karana":{"half_tithi_index":59,"name":"Nāga"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":2137,"month":2,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2501633.770833,"ahargana":1913168.2708,"kali_year":5238,"ayanamsa_lahiri":25.7687,"grahas":{"sun":{"sidereal_longitude":305.70675099999994,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":303.178951,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false,"latitude":-2.0139},"mars":{"sidereal_longitude":298.644051,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":314.15685099999996,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":217.54385100000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":300.970551,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":true},"saturn":{"sidereal_longitude":263.543551,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":331.1382,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":151.1382,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"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":2137,"month":2,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2501633.770833,"kali_year":5238,"ahargana":1913168.2708,"sun":{"sidereal_longitude":305.5015,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":304.5297,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":359.0282,"elapsed_within_tithi_degrees":11.0282},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4,"moon_longitude":304.5297,"elapsed_within_degrees":11.1964},"yoga":{"number":19,"name":"Parigha","sum_longitude":250.0312},"karana":{"half_tithi_index":59,"name":"Nāga"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.014,"elongation":0.972},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.014,"opposition_distance":179.028}},"eclipse_window_40days":[{"offset_days":16,"type":"lunar","occurs":true,"moon_latitude":0.509,"opposition_distance":2.147}]},"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":"05:59","sunsetLocal":"19:03","solarNoonLocal":"12:31","dayLengthHours":13.0584023778583,"dayLengthDisplay":"13 Hours 03 Mins 30 Secs","nightLengthDisplay":"10 Hours 56 Mins 30 Secs","moonriseLocal":"05:48","moonsetLocal":"18:54","rahuKala":{"name":"Rāhu Kāla","start":"12:31","end":"14:09","startHours":12.514022417412036,"endHours":14.146322714644324,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:37","end":"09:15","startHours":7.617121525715174,"endHours":9.249421822947461,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:53","end":"12:31","startHours":10.881722120179749,"endHours":12.514022417412036,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:02","end":"09:28","startHours":9.03178178331649,"endHours":9.467061862578433,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:32","end":"06:53","startHours":6.528921327560315,"endHours":6.87714539096987,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:05","end":"12:57","startHours":12.078742338150093,"endHours":12.94930249667398,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:15","end":"05:07","startHours":4.243700911435113,"endHours":5.114261069958999,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:54","end":"05:59","startHours":4.896621030328028,"endHours":5.984821228482886,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:41","end":"15:34","startHours":14.690422813721753,"endHours":15.56098297224564,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:51","end":"19:15","startHours":18.843223606341187,"endHours":19.243223606341186,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:03","end":"19:35","startHours":19.043223606341186,"endHours":19.587323705418616,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:48","end":"20:33","startHours":18.793223606341186,"endHours":20.543223606341186,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:05","end":"00:57","startHours":24.078742338150093,"endHours":24.94930249667398,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"05:59","end":"07:37","startHours":5.984821228482886,"endHours":7.617121525715174,"quality":"auspicious"},{"name":"Amṛta","start":"07:37","end":"09:15","startHours":7.617121525715174,"endHours":9.249421822947461,"quality":"auspicious"},{"name":"Kāla","start":"09:15","end":"10:53","startHours":9.249421822947461,"endHours":10.881722120179749,"quality":"inauspicious"},{"name":"Śubha","start":"10:53","end":"12:31","startHours":10.881722120179749,"endHours":12.514022417412036,"quality":"auspicious"},{"name":"Roga","start":"12:31","end":"14:09","startHours":12.514022417412036,"endHours":14.146322714644324,"quality":"inauspicious"},{"name":"Udveg","start":"14:09","end":"15:47","startHours":14.146322714644324,"endHours":15.778623011876611,"quality":"inauspicious"},{"name":"Chala","start":"15:47","end":"17:25","startHours":15.778623011876611,"endHours":17.4109233091089,"quality":"neutral"},{"name":"Labha","start":"17:25","end":"19:03","startHours":17.4109233091089,"endHours":19.043223606341186,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"19:03","end":"20:25","startHours":19.043223606341186,"endHours":20.4109233091089,"quality":"inauspicious"},{"name":"Chala","start":"20:25","end":"21:47","startHours":20.4109233091089,"endHours":21.77862301187661,"quality":"neutral"},{"name":"Labha","start":"21:47","end":"23:09","startHours":21.77862301187661,"endHours":23.146322714644324,"quality":"auspicious"},{"name":"Amṛta","start":"23:09","end":"00:31","startHours":23.146322714644324,"endHours":24.514022417412036,"quality":"auspicious"},{"name":"Kāla","start":"00:31","end":"01:53","startHours":24.514022417412036,"endHours":25.88172212017975,"quality":"inauspicious"},{"name":"Śubha","start":"01:53","end":"03:15","startHours":25.88172212017975,"endHours":27.24942182294746,"quality":"auspicious"},{"name":"Roga","start":"03:15","end":"04:37","startHours":27.24942182294746,"endHours":28.617121525715174,"quality":"inauspicious"},{"name":"Udveg","start":"04:37","end":"05:59","startHours":28.617121525715174,"endHours":29.984821228482886,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:59","end":"06:59","startHours":5.984821228482886,"endHours":6.984821228482886,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"06:59","end":"07:59","startHours":6.984821228482886,"endHours":7.984821228482886,"planetary_lord":"Venus"},{"name":"Hora 3","start":"07:59","end":"08:59","startHours":7.984821228482886,"endHours":8.984821228482886,"planetary_lord":"Sun"},{"name":"Hora 4","start":"08:59","end":"09:59","startHours":8.984821228482886,"endHours":9.984821228482886,"planetary_lord":"Mars"},{"name":"Hora 5","start":"09:59","end":"10:59","startHours":9.984821228482886,"endHours":10.984821228482886,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"10:59","end":"11:59","startHours":10.984821228482886,"endHours":11.984821228482886,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"11:59","end":"12:59","startHours":11.984821228482886,"endHours":12.984821228482886,"planetary_lord":"Moon"},{"name":"Hora 8","start":"12:59","end":"13:59","startHours":12.984821228482886,"endHours":13.984821228482886,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"13:59","end":"14:59","startHours":13.984821228482886,"endHours":14.984821228482886,"planetary_lord":"Venus"},{"name":"Hora 10","start":"14:59","end":"15:59","startHours":14.984821228482886,"endHours":15.984821228482886,"planetary_lord":"Sun"},{"name":"Hora 11","start":"15:59","end":"16:59","startHours":15.984821228482886,"endHours":16.984821228482886,"planetary_lord":"Mars"},{"name":"Hora 12","start":"16:59","end":"17:59","startHours":16.984821228482886,"endHours":17.984821228482886,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"17:59","end":"18:59","startHours":17.984821228482886,"endHours":18.984821228482886,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"18:59","end":"19:59","startHours":18.984821228482886,"endHours":19.984821228482886,"planetary_lord":"Moon"},{"name":"Hora 15","start":"19:59","end":"20:59","startHours":19.984821228482886,"endHours":20.984821228482886,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"20:59","end":"21:59","startHours":20.984821228482886,"endHours":21.984821228482886,"planetary_lord":"Venus"},{"name":"Hora 17","start":"21:59","end":"22:59","startHours":21.984821228482886,"endHours":22.984821228482886,"planetary_lord":"Sun"},{"name":"Hora 18","start":"22:59","end":"23:59","startHours":22.984821228482886,"endHours":23.984821228482886,"planetary_lord":"Mars"},{"name":"Hora 19","start":"23:59","end":"00:59","startHours":23.984821228482886,"endHours":24.984821228482886,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"00:59","end":"01:59","startHours":24.984821228482886,"endHours":25.984821228482886,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"01:59","end":"02:59","startHours":25.984821228482886,"endHours":26.984821228482886,"planetary_lord":"Moon"},{"name":"Hora 22","start":"02:59","end":"03:59","startHours":26.984821228482886,"endHours":27.984821228482886,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"03:59","end":"04:59","startHours":27.984821228482886,"endHours":28.984821228482886,"planetary_lord":"Venus"},{"name":"Hora 24","start":"04:59","end":"05:59","startHours":28.984821228482886,"endHours":29.984821228482886,"planetary_lord":"Sun"}],"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":"North (Uttara)","chandraVasa":"South","rahuVasa":"South-West","anandadiYoga":{"name":"Dhvaja","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-10.948773359925267,"eotMinutes":-14.28334504472219,"ayanamsa":25.7687}},"calendars":{"vikram_samvat":2194,"vikram_samvatsara":"Sādhāraṇa","saka_samvat":2059,"saka_samvatsara":"Hemalambī","bengali_samvat":1544,"malayalam_era":1313,"nanakshahi_year":668,"lunar_month":"Phālguna","lunar_month_paksha_full":"Phālguna Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Phālguna","lunar_month_amanta":"Māgha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kumbha (Māsi)","ritu":"Śiśira (Winter)","display_summary":"Phālguna Kṛṣṇa Amāvasyā · Vikram 2194 Sādhāraṇa · Śaka 2059 Hemalambī"},"festivals":[],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Kṛṣṇa Amāvasyā","url":"/day/-3137-10-20","relevance":0.5}]},"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 20, 2137 CE · Perth, Australia · Vidhyamitra","description":"February 20, 2137 CE for Perth, Australia: Kṛṣṇa Amāvasyā, sūryodaya 05:59, sūryāsta 19:03.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2137-02-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2137-02-20","sa":"https://sa.vidhyamitra.com/city/perth/2137-02-20","hi":"https://hi.vidhyamitra.com/city/perth/2137-02-20","x-default":"https://vidhyamitra.com/city/perth/2137-02-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T09:19:03.229Z","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":"2026-06-01T09:19:03.229Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T09:19:03.229Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}