{"id":"vidhyamitra:city-day:sabarimala:2013-02-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/sabarimala/2013-02-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2013-02-18","date_display":"February 18, 2013 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":"Not independently benchmarked across the declared range","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2013,"month":2,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2456341.770833,"kali_year":5114,"ahargana":1867876.2708,"sun":{"sidereal_longitude":305.5884,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":36.9893,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":91.4009,"elapsed_within_tithi_degrees":7.4009},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4,"moon_longitude":36.9893,"elapsed_within_degrees":10.3227},"yoga":{"number":26,"name":"Indra","sum_longitude":342.5778},"karana":{"half_tithi_index":15,"name":"Bava"},"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":2013,"month":2,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2456341.770833,"ahargana":1867876.2708,"kali_year":5114,"ayanamsa_lahiri":24.0365,"grahas":{"sun":{"sidereal_longitude":305.505938,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":37.48013800000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false,"latitude":-0.4748},"mars":{"sidereal_longitude":318.407638,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":323.3426380000001,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":42.446537999999975,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false},"venus":{"sidereal_longitude":295.73903799999994,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":197.23033799999996,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":210.9263,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":30.9263,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","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":"Not independently benchmarked across the declared range","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2013,"month":2,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2456341.770833,"kali_year":5114,"ahargana":1867876.2708,"sun":{"sidereal_longitude":305.5884,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":36.9893,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":91.4009,"elapsed_within_tithi_degrees":7.4009},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4,"moon_longitude":36.9893,"elapsed_within_degrees":10.3227},"yoga":{"number":26,"name":"Indra","sum_longitude":342.5778},"karana":{"half_tithi_index":15,"name":"Bava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.475,"elongation":91.401},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.475,"opposition_distance":88.599}},"eclipse_window_40days":[]},"city":{"slug":"sabarimala","name":"Sabarimalā (Ayyappa)","lat":9.4376,"lon":77.0808,"tz_offset_hours":5.5,"state":"Kerala","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"sabarimala","name":"Sabarimalā (Ayyappa)","lat":9.4376,"lon":77.0808,"tz_offset_hours":5.5,"state":"Kerala","country":"IN","tier":"tirtha"},"sunriseLocal":"06:41","sunsetLocal":"18:32","solarNoonLocal":"12:36","dayLengthHours":11.853555115611766,"dayLengthDisplay":"11 Hours 51 Mins 13 Secs","nightLengthDisplay":"12 Hours 08 Mins 47 Secs","moonriseLocal":"12:27","moonsetLocal":"01:01","rahuKala":{"name":"Rāhu Kāla","start":"08:09","end":"09:38","startHours":8.15677810185226,"endHours":9.63847249130373,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:07","end":"12:36","startHours":11.1201668807552,"endHours":12.601861270206673,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:05","end":"15:34","startHours":14.083555659658142,"endHours":15.565250049109611,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:26","end":"09:50","startHours":9.440913239376869,"endHours":9.836031743230594,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:10","end":"07:29","startHours":7.168981842217946,"endHours":7.485076645300926,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:12","end":"13:00","startHours":12.206742766352946,"endHours":12.996979774060396,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:06","end":"05:53","startHours":5.094609696985887,"endHours":5.884846704693338,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:41","end":"06:41","startHours":5.687287452766475,"endHours":6.675083712400789,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:35","end":"15:22","startHours":14.5774537894753,"endHours":15.367690797182751,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:20","end":"18:44","startHours":18.328638828012554,"endHours":18.728638828012553,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:32","end":"19:01","startHours":18.528638828012554,"endHours":19.02253695782971,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:17","end":"20:02","startHours":18.278638828012554,"endHours":20.028638828012554,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:12","end":"01:00","startHours":24.206742766352942,"endHours":24.996979774060396,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:41","end":"08:09","startHours":6.675083712400789,"endHours":8.15677810185226,"quality":"auspicious"},{"name":"Kāla","start":"08:09","end":"09:38","startHours":8.15677810185226,"endHours":9.63847249130373,"quality":"inauspicious"},{"name":"Śubha","start":"09:38","end":"11:07","startHours":9.63847249130373,"endHours":11.1201668807552,"quality":"auspicious"},{"name":"Roga","start":"11:07","end":"12:36","startHours":11.1201668807552,"endHours":12.601861270206673,"quality":"inauspicious"},{"name":"Udveg","start":"12:36","end":"14:05","startHours":12.601861270206673,"endHours":14.083555659658142,"quality":"inauspicious"},{"name":"Chala","start":"14:05","end":"15:34","startHours":14.083555659658142,"endHours":15.565250049109611,"quality":"neutral"},{"name":"Labha","start":"15:34","end":"17:03","startHours":15.565250049109611,"endHours":17.046944438561084,"quality":"auspicious"},{"name":"Amṛta","start":"17:03","end":"18:32","startHours":17.046944438561084,"endHours":18.528638828012554,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:32","end":"20:03","startHours":18.528638828012554,"endHours":20.046944438561084,"quality":"neutral"},{"name":"Labha","start":"20:03","end":"21:34","startHours":20.046944438561084,"endHours":21.56525004910961,"quality":"auspicious"},{"name":"Amṛta","start":"21:34","end":"23:05","startHours":21.56525004910961,"endHours":23.083555659658142,"quality":"auspicious"},{"name":"Kāla","start":"23:05","end":"00:36","startHours":23.083555659658142,"endHours":24.60186127020667,"quality":"inauspicious"},{"name":"Śubha","start":"00:36","end":"02:07","startHours":24.60186127020667,"endHours":26.1201668807552,"quality":"auspicious"},{"name":"Roga","start":"02:07","end":"03:38","startHours":26.1201668807552,"endHours":27.63847249130373,"quality":"inauspicious"},{"name":"Udveg","start":"03:38","end":"05:09","startHours":27.63847249130373,"endHours":29.15677810185226,"quality":"inauspicious"},{"name":"Chala","start":"05:09","end":"06:41","startHours":29.15677810185226,"endHours":30.675083712400788,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:41","end":"07:41","startHours":6.675083712400789,"endHours":7.675083712400789,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:41","end":"08:41","startHours":7.675083712400789,"endHours":8.675083712400788,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:41","end":"09:41","startHours":8.675083712400788,"endHours":9.675083712400788,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:41","end":"10:41","startHours":9.675083712400788,"endHours":10.675083712400788,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:41","end":"11:41","startHours":10.675083712400788,"endHours":11.675083712400788,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:41","end":"12:41","startHours":11.675083712400788,"endHours":12.675083712400788,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:41","end":"13:41","startHours":12.675083712400788,"endHours":13.675083712400788,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:41","end":"14:41","startHours":13.675083712400788,"endHours":14.675083712400788,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:41","end":"15:41","startHours":14.675083712400788,"endHours":15.675083712400788,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:41","end":"16:41","startHours":15.675083712400788,"endHours":16.675083712400788,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:41","end":"17:41","startHours":16.675083712400788,"endHours":17.675083712400788,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:41","end":"18:41","startHours":17.675083712400788,"endHours":18.675083712400788,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:41","end":"19:41","startHours":18.675083712400788,"endHours":19.675083712400788,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:41","end":"20:41","startHours":19.675083712400788,"endHours":20.675083712400788,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:41","end":"21:41","startHours":20.675083712400788,"endHours":21.675083712400788,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:41","end":"22:41","startHours":21.675083712400788,"endHours":22.675083712400788,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:41","end":"23:41","startHours":22.675083712400788,"endHours":23.675083712400788,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:41","end":"00:41","startHours":23.675083712400788,"endHours":24.675083712400788,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:41","end":"01:41","startHours":24.675083712400788,"endHours":25.675083712400788,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:41","end":"02:41","startHours":25.675083712400788,"endHours":26.675083712400788,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:41","end":"03:41","startHours":26.675083712400788,"endHours":27.675083712400788,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:41","end":"04:41","startHours":27.675083712400788,"endHours":28.675083712400788,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:41","end":"05:41","startHours":28.675083712400788,"endHours":29.675083712400788,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:41","end":"06:41","startHours":29.675083712400788,"endHours":30.675083712400788,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"North-East","anandadiYoga":{"name":"Dhvaja","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-11.631158149114874,"eotMinutes":-14.434876212400278,"ayanamsa":24.0365}},"calendars":{"vikram_samvat":2070,"vikram_samvatsara":"Parābhava","saka_samvat":1935,"saka_samvatsara":"Vijaya","bengali_samvat":1420,"malayalam_era":1189,"nanakshahi_year":544,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","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":"Māgha Śukla Aṣṭamī · Vikram 2070 Parābhava · Śaka 1935 Vijaya"},"festivals":[{"id":"bhishma-ashtami","name":"Bhīṣmāṣṭamī","name_sanskrit":"भीष्माष्टमी","tradition":"Pan-Hindu","associated_deity":"Bhīṣma Pitāmaha","significance":"Bhīṣma's mahaprasthāna anniversary (Māgha Śukla 8); Bhīṣma-tarpaṇa.","vrata":true,"detection":{"tithi_number":8,"tithi_paksha":"Śukla","lunar_month":"Māgha"},"precedence":2,"sources":["Mahābhārata, Anuśāsana Parva"]}],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7, 6.34-35.","step_count":5,"url":"/walk/chandra-walk","steps":[{"label":"BG 6.5","url":"/bhagavad-gita/6/5","purpose":"Lift the self by the Self; begin the walk with inner responsibility."},{"label":"BG 6.6","url":"/bhagavad-gita/6/6","purpose":"See the mind as friend when mastered and enemy when unmastered."},{"label":"BG 6.7","url":"/bhagavad-gita/6/7","purpose":"Stabilize the conquered mind in heat/cold, honor/dishonor, pleasure/pain."},{"label":"BG 6.34","url":"/bhagavad-gita/6/34","purpose":"Name the restless mind honestly before trying to discipline it."},{"label":"BG 6.35","url":"/bhagavad-gita/6/35","purpose":"Complete with abhyāsa and vairāgya: practice and detachment."}]},"reason":"Dedicated festival walk for Bhīṣmāṣṭamī is not live yet; Somavāra (Monday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"sabarimala"},"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, 2013 CE · Sabarimalā (Ayyappa) · Vidhyamitra","description":"February 18, 2013 CE for Sabarimalā (Ayyappa): Śukla Aṣṭamī, sūryodaya 06:41, sūryāsta 18:32.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/sabarimala/2013-02-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/sabarimala/2013-02-18","sa":"https://sa.vidhyamitra.com/city/sabarimala/2013-02-18","hi":"https://hi.vidhyamitra.com/city/sabarimala/2013-02-18","x-default":"https://vidhyamitra.com/city/sabarimala/2013-02-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-08-10T12:22:12.476Z","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":"2026-08-10T12:22:12.476Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-08-10T12:22:12.476Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"},"reader_local_antaryami":{"reader_geography":"Every reader enters from their own kṣetra anywhere on Bhūmi; no single city is the universal center.","purna_chain":["Goloka/Vraja Rādhā-Krishna","Vaikuṇṭha Lakṣmī-Nārāyaṇa","Mahāviṣṇu/Kāraṇodakaśāyī Viṣṇu","Garbhodakaśāyī Viṣṇu","Brahmā","Kṣīrodaka Paramātmā/Antaryāmī (Kṣīrodakaśāyī Viṣṇu)","Bhūmi","reader's own kṣetra anywhere on Bhūmi","exact reading kṣetra","reader-bhakta","chitta/vāṇī/aṅgulī","keyboard-silicon-pathways","Vidhyāmitra substrate","reader/seer","Krishna"],"antaryami_responsibility_formula":"Kṣīrodakaśāyī Viṣṇu = Paramātmā = Antaryāmī. Jīva desires. Prakṛti executes through guṇas. Paramātmā witnesses, permits, remembers, guides, and sustains. Bhagavān is the ultimate source.","source_anchors":[{"label":"BG 13.23","path":"/bhagavad-gita/13/23","meaning":"upadraṣṭā-anumantā · witness-permitter"},{"label":"BG 15.15","path":"/bhagavad-gita/15/15","meaning":"the Lord seated in every heart as memory, knowledge, and forgetting"},{"label":"BG 18.61","path":"/bhagavad-gita/18/61","meaning":"Īśvara seated in the heart of all beings"}],"nama_seal":"Hare Krishna Hare Krishna · Krishna Krishna Hare Hare · Hare Rama Hare Rama · Rama Rama Hare Hare"}}}