{"id":"vidhyamitra:city-day:perth:1968-02-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/1968-02-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1968-02-18","date_display":"February 18, 1968 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":1968,"month":2,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2439904.770833,"kali_year":5069,"ahargana":1851439.2708,"sun":{"sidereal_longitude":305.2277,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":172.6389,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":227.4112,"elapsed_within_tithi_degrees":11.4112},"nakshatra":{"number":13,"name":"Hasta","pada":4,"moon_longitude":172.6389,"elapsed_within_degrees":12.6389},"yoga":{"number":9,"name":"Śūla","sum_longitude":117.8666},"karana":{"half_tithi_index":37,"name":"Bālava"},"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":1968,"month":2,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2439904.770833,"ahargana":1851439.2708,"kali_year":5069,"ayanamsa_lahiri":23.4078,"grahas":{"sun":{"sidereal_longitude":305.042053,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":174.07405300000005,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false,"latitude":0.7186},"mars":{"sidereal_longitude":337.710553,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":300.32405300000005,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":true},"jupiter":{"sidereal_longitude":128.217353,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":true},"venus":{"sidereal_longitude":274.387653,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":346.939953,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":1.8377,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":181.8377,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"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":1968,"month":2,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2439904.770833,"kali_year":5069,"ahargana":1851439.2708,"sun":{"sidereal_longitude":305.2277,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":172.6389,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":227.4112,"elapsed_within_tithi_degrees":11.4112},"nakshatra":{"number":13,"name":"Hasta","pada":4,"moon_longitude":172.6389,"elapsed_within_degrees":12.6389},"yoga":{"number":9,"name":"Śūla","sum_longitude":117.8666},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.719,"elongation":132.589},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.719,"opposition_distance":47.411}},"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":"05:56","sunsetLocal":"19:06","solarNoonLocal":"12:31","dayLengthHours":13.151920057425725,"dayLengthDisplay":"13 Hours 09 Mins 07 Secs","nightLengthDisplay":"10 Hours 50 Mins 53 Secs","moonriseLocal":"21:27","moonsetLocal":"10:07","rahuKala":{"name":"Rāhu Kāla","start":"17:27","end":"19:06","startHours":17.448517958407983,"endHours":19.0925079655862,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:31","end":"14:10","startHours":12.516547936873337,"endHours":14.160537944051553,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:48","end":"17:27","startHours":15.804527951229769,"endHours":17.448517958407983,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:01","end":"09:27","startHours":9.009369254893144,"endHours":9.447766590140668,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:29","end":"06:50","startHours":6.488584577219881,"endHours":6.839302445417901,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:05","end":"12:57","startHours":12.078150601625813,"endHours":12.954945272120861,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:11","end":"05:04","startHours":4.186998567170379,"endHours":5.063793237665427,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:51","end":"05:56","startHours":4.844594570041665,"endHours":5.9405879081604755,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:43","end":"15:35","startHours":14.70853461311096,"endHours":15.585329283606008,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:54","end":"19:18","startHours":18.8925079655862,"endHours":19.2925079655862,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:06","end":"19:38","startHours":19.0925079655862,"endHours":19.640504634645605,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:51","end":"20:36","startHours":18.8425079655862,"endHours":20.5925079655862,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:05","end":"00:57","startHours":24.07815060162581,"endHours":24.954945272120863,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:56","end":"07:35","startHours":5.9405879081604755,"endHours":7.584577915338691,"quality":"inauspicious"},{"name":"Chala","start":"07:35","end":"09:14","startHours":7.584577915338691,"endHours":9.228567922516907,"quality":"neutral"},{"name":"Labha","start":"09:14","end":"10:52","startHours":9.228567922516907,"endHours":10.872557929695123,"quality":"auspicious"},{"name":"Amṛta","start":"10:52","end":"12:31","startHours":10.872557929695123,"endHours":12.516547936873337,"quality":"auspicious"},{"name":"Kāla","start":"12:31","end":"14:10","startHours":12.516547936873337,"endHours":14.160537944051553,"quality":"inauspicious"},{"name":"Śubha","start":"14:10","end":"15:48","startHours":14.160537944051553,"endHours":15.804527951229769,"quality":"auspicious"},{"name":"Roga","start":"15:48","end":"17:27","startHours":15.804527951229769,"endHours":17.448517958407983,"quality":"inauspicious"},{"name":"Udveg","start":"17:27","end":"19:06","startHours":17.448517958407983,"endHours":19.0925079655862,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"19:06","end":"20:27","startHours":19.0925079655862,"endHours":20.448517958407987,"quality":"auspicious"},{"name":"Roga","start":"20:27","end":"21:48","startHours":20.448517958407987,"endHours":21.80452795122977,"quality":"inauspicious"},{"name":"Udveg","start":"21:48","end":"23:10","startHours":21.80452795122977,"endHours":23.160537944051555,"quality":"inauspicious"},{"name":"Chala","start":"23:10","end":"00:31","startHours":23.160537944051555,"endHours":24.516547936873337,"quality":"neutral"},{"name":"Labha","start":"00:31","end":"01:52","startHours":24.516547936873337,"endHours":25.872557929695123,"quality":"auspicious"},{"name":"Amṛta","start":"01:52","end":"03:14","startHours":25.872557929695123,"endHours":27.22856792251691,"quality":"auspicious"},{"name":"Kāla","start":"03:14","end":"04:35","startHours":27.22856792251691,"endHours":28.58457791533869,"quality":"inauspicious"},{"name":"Śubha","start":"04:35","end":"05:56","startHours":28.58457791533869,"endHours":29.940587908160474,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:56","end":"06:56","startHours":5.9405879081604755,"endHours":6.9405879081604755,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:56","end":"07:56","startHours":6.9405879081604755,"endHours":7.9405879081604755,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:56","end":"08:56","startHours":7.9405879081604755,"endHours":8.940587908160476,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:56","end":"09:56","startHours":8.940587908160476,"endHours":9.940587908160476,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:56","end":"10:56","startHours":9.940587908160476,"endHours":10.940587908160476,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:56","end":"11:56","startHours":10.940587908160476,"endHours":11.940587908160476,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:56","end":"12:56","startHours":11.940587908160476,"endHours":12.940587908160476,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:56","end":"13:56","startHours":12.940587908160476,"endHours":13.940587908160476,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:56","end":"14:56","startHours":13.940587908160476,"endHours":14.940587908160476,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:56","end":"15:56","startHours":14.940587908160476,"endHours":15.940587908160476,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:56","end":"16:56","startHours":15.940587908160476,"endHours":16.940587908160474,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:56","end":"17:56","startHours":16.940587908160474,"endHours":17.940587908160474,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:56","end":"18:56","startHours":17.940587908160474,"endHours":18.940587908160474,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:56","end":"19:56","startHours":18.940587908160474,"endHours":19.940587908160474,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:56","end":"20:56","startHours":19.940587908160474,"endHours":20.940587908160474,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:56","end":"21:56","startHours":20.940587908160474,"endHours":21.940587908160474,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:56","end":"22:56","startHours":21.940587908160474,"endHours":22.940587908160474,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:56","end":"23:56","startHours":22.940587908160474,"endHours":23.940587908160474,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:56","end":"00:56","startHours":23.940587908160474,"endHours":24.940587908160474,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:56","end":"01:56","startHours":24.940587908160474,"endHours":25.940587908160474,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:56","end":"02:56","startHours":25.940587908160474,"endHours":26.940587908160474,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:56","end":"03:56","startHours":26.940587908160474,"endHours":27.940587908160474,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:56","end":"04:56","startHours":27.940587908160474,"endHours":28.940587908160474,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:56","end":"05:56","startHours":28.940587908160474,"endHours":29.940587908160474,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"West (Paścim)","chandraVasa":"North-West","rahuVasa":"North-East","anandadiYoga":{"name":"Mānasa","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-12.011696674106572,"eotMinutes":-14.434876212400278,"ayanamsa":23.4078}},"calendars":{"vikram_samvat":2025,"vikram_samvatsara":"Durmati","saka_samvat":1890,"saka_samvatsara":"Kīlaka","bengali_samvat":1375,"malayalam_era":1144,"nanakshahi_year":499,"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 Caturthī · Vikram 2025 Durmati · Śaka 1890 Kīlaka"},"festivals":[{"id":"sankashti-chaturthi","name":"Saṅkaṣṭī Caturthī","name_sanskrit":"सङ्कष्टी चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Gaṇeśa vrata.","vrata":true,"detection":{"tithi_number":19,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"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 February 18, 1968 CE · Perth, Australia · Vidhyamitra","description":"February 18, 1968 CE for Perth, Australia: Kṛṣṇa Caturthī, sūryodaya 05:56, sūryāsta 19:06.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/1968-02-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/1968-02-18","sa":"https://sa.vidhyamitra.com/city/perth/1968-02-18","hi":"https://hi.vidhyamitra.com/city/perth/1968-02-18","x-default":"https://vidhyamitra.com/city/perth/1968-02-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T04:39:45.235Z","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":"2026-06-01T04:39:45.235Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T04:39:45.235Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}