इस महीने का हर वैदिक त्योहार, एकादशी, पूर्णिमा, अमावस्या और संक्रांति — पंचांग इंजन से लाइव गणना, दुर्लभता के हिसाब से बँटा, प्रमाण सहित। 81 कार्यक्रम: 0 बड़े, 35 मध्यम, 46 आवर्ती।
Narada Purana — Purvabhaga, karana-prakarana, verse 124Enumerates Shakuni, Naga, Chatushpada, Kimstughna as the four sthira (fixed) karanas of the lunar month.
Muhurta Chintamani — Samvatsara-prakarana, Sun-avastha on Sankranti, verse 13Sun in Kimstughna karana described as 'urdhva' (upright, sama) — 'sama: shreshtha ihardhavarshane', i.e. neutral-to-mildly auspicious.
रवि · दिस 01
अमावस्या
Amavasya
मध्यम10:30 – 11:51amavasyanew_moonpitru
New moon, powerful for Tantric practices and pitru karma
Muhurta Chintamani — Shubhashubha Prakarana (karana enumeration), verses 23-24 (Pyarelal Mishra Hindi ed., lines 81-122 in muhurta_cintamani slug) — 'श्रीवत्साख्यो वज्रकं मुद्गरश्च ... चरसुस्थिराख्यप्रवर्धमानाः फलदाः स्वनाम्ना'Names all 11 karanas with their phala — Bava (chara, first) is the auspicious chara-karana for new beginnings; karanas grouped as 'phaladah svanama' (effects per their names).
मंगल · दिस 03
मूला मङ्गलवार
Mula Tuesday
मध्यम15:45 – 16:41researchketumars
Research and root cause analysis, Ketu nakshatra + Mars
Muhurta Chintamani — Shubhashubha-prakarana, tyajya yoga section, verse 35Shula yoga's first 5 ghatikas explicitly enjoined for rejection in all karmas — especially travel.
Narada Purana — Purvabhaga, jataka-yoga-phala section, verses 195-196Shula-yoga jataka described as shura-vira but adhana (without wealth) — reinforces 'painful obstacles' theme.
Muhurta Chintamani — Shubhashubha-prakaranam (tyajya nakshatra-yoga section), verses 34-35'Parigha-rdhaṁ pancha shule shaṭ cha ganda-atigandayoh, vyaghate nava-naadyash cha varjyaah sarveshu karmasu.' Ganda and Atiganda yogas explicitly listed with 6 nadis to be avoided in all auspicious works.
Muhurta Chintamani — Shubhashubha Prakarana (karana enumeration), verses 23-24 (Pyarelal Mishra Hindi ed., lines 81-122 in muhurta_cintamani slug) — 'श्रीवत्साख्यो वज्रकं मुद्गरश्च ... चरसुस्थिराख्यप्रवर्धमानाः फलदाः स्वनाम्ना'Names all 11 karanas with their phala — Bava (chara, first) is the auspicious chara-karana for new beginnings; karanas grouped as 'phaladah svanama' (effects per their names).
Phaladeepika — Upagraha-prakarana (calculation of dhuma, vyatipata, parivesha, indrachapa, ketu), verse 5 (formula for vyatipata from solar position; Hindi-Alt ed., around lines 22701-22750)Vyatipata = (Sun + 4r 13°20') subtracted from 12 rashis — defined as 'a-prakasha-graha' (invisible graha).
Narada Purana — Uttarardha, Ekadashi-vrata prakaranam, parana/dwadashi section'Yadi dvitiya din dvadashi hai to pehle din ki dashami-viddha ekadashi bhi niṣiddha hi hai (isliye aisi paristhiti mein dvadashi ko vrata karna chahiye).'
Muhurta Chintamani — Shubhashubha Prakarana (karana enumeration), verses 23-24 (Pyarelal Mishra Hindi ed., lines 81-122 in muhurta_cintamani slug) — 'श्रीवत्साख्यो वज्रकं मुद्गरश्च ... चरसुस्थिराख्यप्रवर्धमानाः फलदाः स्वनाम्ना'Names all 11 karanas with their phala — Bava (chara, first) is the auspicious chara-karana for new beginnings; karanas grouped as 'phaladah svanama' (effects per their names).
Muhurta Chintamani — Shubhashubha Prakarana (karana enumeration), verses 23-24 (Pyarelal Mishra Hindi ed., lines 81-122 in muhurta_cintamani slug) — 'श्रीवत्साख्यो वज्रकं मुद्गरश्च ... चरसुस्थिराख्यप्रवर्धमानाः फलदाः स्वनाम्ना'Names all 11 karanas with their phala — Bava (chara, first) is the auspicious chara-karana for new beginnings; karanas grouped as 'phaladah svanama' (effects per their names).
सोम · दिस 16
धनु संक्रान्ति
Dhanu Sankranti
मध्यम06:24 – 17:44sankrantisurya
Sun enters Dhanu (Sagittarius). Beginning of Kharmas period when auspicious ceremonies are generally avoided.
Muhurta Chintamani — Nakshatra-prakaranam (Uttarayana/Dakshinayana sankranti section), verse 3 (ayana-sankranti pravesha)'Makara-Karkayoh kramashah saumyam (Uttarayanam) yamyam' -- Dhanu-sankranti enters Dakshinayana's last solar month before Makara (Uttarayana). The 'Kharmas' (mala-masa-like) vyavahara-niṣedha tradition follows directly from this.
सोम · दिस 16
संक्रान्ति
Sankranti
मध्यम06:24 – 17:44sankrantisuryasnanadana
Sun enters a new rashi (solar ingress). All Sankrantis are considered punya kala. Sacred bath, surya arghya, tila dana, and charity are prescribed. The punya kala extends 16 ghatikas (~6.5 hours) before and after the exact transition moment.
Muhurta Chintamani — Shubhashubha-prakaranam, verses 28-29 (Sarvartha-siddhi-yoga list)MC enumerates auspicious nakshatra-vara pairs; Pushya is paired with its lord Mercury (Buddha) in the budha-anuradha and budha-rohini sets, and Wed-Pushya falls in the same Sarvartha-siddhi family.
Muhurta Chintamani — Nakshatra-prakarana (tyajya nakshatra and yoga), verse 34 (Pyarelal Mishra Hindi ed., lines 983-1007) — 'विष्कम्भवज्रवटिकात्रयमेव वर्ज्यम्'Vishkambha (with vajra) — first three vatikas (ghatikas) explicitly forbidden in shubha-karma; the yoga's name literally means 'obstruction'.
Muhurta Chintamani — Shubhashubha Prakarana (karana enumeration), verses 23-24 (Pyarelal Mishra Hindi ed., lines 81-122 in muhurta_cintamani slug) — 'श्रीवत्साख्यो वज्रकं मुद्गरश्च ... चरसुस्थिराख्यप्रवर्धमानाः फलदाः स्वनाम्ना'Names all 11 karanas with their phala — Bava (chara, first) is the auspicious chara-karana for new beginnings; karanas grouped as 'phaladah svanama' (effects per their names).
रवि · दिस 22
सिद्ध योग
Siddha Yoga
नियमित12:21 – 14:32siddhiauspicious
Accomplishment yoga, good for important beginnings
Muhurta Chintamani — Shubhashubha Prakarana (karana enumeration), verses 23-24 (Pyarelal Mishra Hindi ed., lines 81-122 in muhurta_cintamani slug) — 'श्रीवत्साख्यो वज्रकं मुद्गरश्च ... चरसुस्थिराख्यप्रवर्धमानाः फलदाः स्वनाम्ना'Names all 11 karanas with their phala — Bava (chara, first) is the auspicious chara-karana for new beginnings; karanas grouped as 'phaladah svanama' (effects per their names).
गुरु · दिस 26
सिद्ध योग
Siddha Yoga
नियमित22:29 – 24:44siddhiauspicious
Accomplishment yoga, good for important beginnings
Narada Purana — Uttarardha, Ekadashi-vrata prakaranam, parana/dwadashi section'Yadi dvitiya din dvadashi hai to pehle din ki dashami-viddha ekadashi bhi niṣiddha hi hai (isliye aisi paristhiti mein dvadashi ko vrata karna chahiye).'
Muhurta Chintamani — Shubhashubha-prakarana, tyajya yoga section, verse 35Shula yoga's first 5 ghatikas explicitly enjoined for rejection in all karmas — especially travel.
Narada Purana — Purvabhaga, jataka-yoga-phala section, verses 195-196Shula-yoga jataka described as shura-vira but adhana (without wealth) — reinforces 'painful obstacles' theme.
Muhurta Chintamani — Shubhashubha-prakaranam (tyajya nakshatra-yoga section), verses 34-35'Parigha-rdhaṁ pancha shule shaṭ cha ganda-atigandayoh, vyaghate nava-naadyash cha varjyaah sarveshu karmasu.' Ganda and Atiganda yogas explicitly listed with 6 nadis to be avoided in all auspicious works.
Narada Purana — Purvabhaga, karana-prakarana, verse 124Enumerates Shakuni, Naga, Chatushpada, Kimstughna as the four sthira (fixed) karanas of the lunar month.
मंगल · दिस 31
सिद्ध योग
Siddha Yoga
नियमित03:56 – 03:22siddhiauspicious
Accomplishment yoga, good for important beginnings
BPHS — Panchanga-sadhana / Karana-prakarana, standard BPHS section on the 11 karanas (Bava-Balava-Kaulava ... Naga-Kimstughna)BPHS lists the chara-karanas (Bava through Vishti) as repeated 8 times across the 30 tithi-halves; Bava is the first and most auspicious.
Mula/Jyeshtha/Ardra/Ashlesha + Saturday classed as 'tikshna-daruna' — fit for abhichara, ghata, pashu-damana, root-breaking work; Tuesday (Mars) is the krura-vara equivalent of Saturday for such karma.
Matsya Purana — Adbhuta-shanti-adhyaya (Mula-nakshatra adbhutas), verse 27 (Gita Press ed., lines 113101-113150) — 'मूले वरुणदैवत्ये ये भवन्त्यद्भुतास्तथा ... वारुणी ... महाशान्तिः'Establishes Mula's Varuna-daivatya and the prescribed Varuni-mahashanti — confirms Mula's intense, root-disturbing nature suited to Tuesday's Mars-energy for research and abhichara.
Narada Purana — Purvabhaga, Dvitiya-vrata section (Ashunyashayana-vrata), month-wise Dvitiya-vrata (Sankshipta ed., lines 65701-65750) — 'अशुन्यशयन ... चन्द्रमाके लिये अर्घ्यदान'Shravana-Krishna Dvitiya = Ashunyashayana-vrata to Vishnu-Lakshmi with chandra-arghya; Kartika-shukla Dvitiya = Yamadvitiya.
Bhavishya Purana — Uttara-parva, Chaturthi-vrata-kalpa (Angaraka-chaturthi-vrata-varnana), Chaturthi-vrata chapter (DLI Hindi ed., around lines 70101-70150)Krishna-Yudhishthira samvada on Chaturthi vrata including Angaraka Chaturthi.
Matsya Purana — Surya-vamsha-varnana (origin of Vishti/Bhadra), Vishti as Chhaya's daughter (Gita Press ed., around lines 5851-5900)Vishti (Bhadra) — bhayankara-rupavali tritiya kanya — is established as kala-karana-svarupa, the personification of the inauspicious karana.
Phaladeepika — Santanachinta-prakarana (use of Vishti-karana in muhurta), verse 15 (Hindi-Alt ed., around lines 9801-9850)Phaladeepika explicitly names Vishti-karana as varjya for shubha-karya and for santana-prashna; classical avoidance rule.
Narada Purana — Purvabhaga, Karana-jnana-vidhi (11 karanas including Vishti), around verses 124-125 (sankshipta ed., around lines 34051-34100)Lists the 7 chara + 4 sthira karanas including Vishti (#7) — formula to determine karana from tithi-number.
Verses 28-29 enumerate the full vara-nakshatra table (Sun: Hasta/Mula/Uttaraphalguni/Uttarashadha/Uttarabhadrapada/Pushya/Ashvini; Moon: Shravana/Rohini/Mrigashira/Pushya/Anuradha; Mars: Ashvini/Uttarabhadrapada/Krittika/Ashlesha; etc.) -- matches our table exactly.
, Shashthi-stuti section (devi identified as Kartikeya-pranapriya)
, full chapters
Both adhyayas prescribe Saptami-tithi as the supreme day for Surya worship using the twelve-name list (Bhanu/Arka/Ravi/Brahma/Surya/Shakra/Hari/Shiva/Shriman/Vibhavasu/Tvashta/Varuna).
Bhavishya Purana — Brahma Parva, Saptami-kalpa (Akshyanga Saptami adhyaya 111), opening versesBhavishya Purana's Saptami-kalpa is the standard nibandha source for Bhanu/Ravi-Saptami; Sunday + Saptami amplifies it.
Devi Bhagavata — Skandha 3, Navaratri-vidhi (importance of Ashtami), Ashtami pujan prescription (Vol. 1 Gita Press ed., around lines 45751-45800)If unable to do full nine-day Navaratri, Ashtami tithi must be observed; references Daksha-yajna context.
Twelve-month Navami-vrata catalogue — every Navami is sacred to Durga/Chandika/Kumari in some form.
Devi Bhagavata — Tritiya-skandha (Sharad/Vasanta Navaratri narrative), Tritiya-skandha, Sudarshana-Subahu Navaratri narrative (Gita Press Vol.1, around lines 44951-45000) — 'नवरात्रेषु सर्वेषु ... अर्चनं हवनं यागं देव्या'Each Navami caps the Navaratri sequence; the day is fixed for Devi-arcana, havana, yaga.
BPHS — Panchanga-sadhana / Karana-prakarana, standard BPHS section on the 11 karanas (Bava-Balava-Kaulava ... Naga-Kimstughna)BPHS lists the chara-karanas (Bava through Vishti) as repeated 8 times across the 30 tithi-halves; Bava is the first and most auspicious.
Verses 28-29 enumerate the full vara-nakshatra table (Sun: Hasta/Mula/Uttaraphalguni/Uttarashadha/Uttarabhadrapada/Pushya/Ashvini; Moon: Shravana/Rohini/Mrigashira/Pushya/Anuradha; Mars: Ashvini/Uttarabhadrapada/Krittika/Ashlesha; etc.) -- matches our table exactly.
Parashara Smriti — Madhaviya-vritti, Dana-kala-nirupana, Section on vyatipata as inauspicious yoga / sankrama (Islampurkar 1894 ed., around lines 40233-40259)Mahavyatipata defined; cited alongside ayana and vishuva as auspicious-dana times despite the yoga itself being inauspicious for new beginnings.
'Brihaspati-vara ko Pushya, Shukra-vara ko Revati aur Shanivara ko Rohini ho to siddhi-yoga hota hai.' Revati's completion significance on Buddha-vara (Mercury-day for Mercury's exaltation sign Kanya-bordering Revati) follows the same vara-nakshatra mela principle.
Muhurta Chintamani — Shubhashubha-prakaranam (vara-nakshatra mrityu-yoga chart), verse 5Revati is the Wednesday dagdha-nakshatra in some traditions but is universally treated as the completion-nakshatra; the present rule reflects the latter usage.
(2)
Narada Purana — Purvabhaga, Ekadashi-vrata section, Ekadashi-vrata-mahatmya (sankshipta ed., text around lines 14901-14950)Detailed rules on dashami-viddha vs dvadashi-viddha Ekadashi, fasting and parana.
Brahma Vaivarta Purana — Krishna-janma-khanda, Ekadashi-vrata prescription, Ekadashi-upavasa section (sankshipta ed., text around lines 71651-71700)All Vaishnavas, yatis, widows, brahmacharis are to fast on every Ekadashi.
BPHS — Panchanga-sadhana / Karana-prakarana, standard BPHS section on the 11 karanas (Bava-Balava-Kaulava ... Naga-Kimstughna)BPHS lists the chara-karanas (Bava through Vishti) as repeated 8 times across the 30 tithi-halves; Bava is the first and most auspicious.
'Yam, Vishvedeva, Chandra, Brahma, Guru, Chandra, Indra, Jala, Sarpa, Agni, Surya, Bhumi, Rudra, Brahma, Varuna, Ganesha, Rudra, Kubera, Vishvakarma, Mitra...' -- Rudra is named twice (yoga 13 Vyaghata and yoga 20 Shiva); the Shiva-Yoga at index 20 derives its name from this lordship.
Muhurta Chintamani — Samskara-prakarana (Pradosha-lakshana), verse 55 (Pyarelal Mishra Hindi ed., lines 3616-3650) — 'अर्कतर्कत्रितिथिषु प्रदोषः स्यात्'Defines pradosha-kala as the half-prahar around sunset on Trayodashi, Chaturdashi, Pratipad and other listed tithis.
Skanda Purana — Pradosha-vrata-mahatmya (Chandrasena and Shrikara legend), section on Pradosha-shivapujana (Sankshipta ed., lines 88951-89000)Anjananandana Hanuman teaches the gopa Shrikara the discipline of Pradosha Shiva worship.
The 7-vara amrita-siddhi mapping is given as part of the wider Anandadi-27 yoga corpus and the sarvartha-siddhi enumeration.
Narada Purana — Purvabhaga, Pratham Pada (yoga-prakarana), verses 242-244 (sarvartha-siddhi-yoga -- same vara-nakshatra pairs)
Lists 28 anandadi yogas: 'siddhi' named explicitly as one yielding karya-siddhi by its own name (siddha-yoga is the 21st nitya-yoga).
Narada Purana — Purvabhaga, Anandadi-yoga section, Anandadi 28-yoga list (sankshipta ed., around lines 42101-42150)Siddhi yoga #19 in Anandadi enumeration; 'svanama-phaladayaka' — gives fruit per its name.
Narada Purana — Purvabhaga, Purnima-vrata-prakarana, opening section (masa-wise Purnima vratas)Sanatana-narada vada on Purnima vratas through the year.
Matsya Purana — Parva-sandhi and Purnima-tithi prakarana, section on pakshanta-sandhi and pournamasika
BPHS — Panchanga-sadhana / Karana-prakarana, standard BPHS section on the 11 karanas (Bava-Balava-Kaulava ... Naga-Kimstughna)BPHS lists the chara-karanas (Bava through Vishti) as repeated 8 times across the 30 tithi-halves; Bava is the first and most auspicious.
Narada Purana — Uttarardha, Sankranti-punyakala prakaranam, dvi-svabhava (Mithuna/Kanya/Dhanu/Meena) 16-ghadi sectionDhanu-sankranti = Ṣaḍashiti-mukhi sankranti (dvi-svabhava rashi); merit 86,000-fold per Padma Purana cross-reference cited in this section.
Verses 28-29 enumerate the full vara-nakshatra table (Sun: Hasta/Mula/Uttaraphalguni/Uttarashadha/Uttarabhadrapada/Pushya/Ashvini; Moon: Shravana/Rohini/Mrigashira/Pushya/Anuradha; Mars: Ashvini/Uttarabhadrapada/Krittika/Ashlesha; etc.) -- matches our table exactly.
Brahma listed at position 25 of the Anandadi yogas; each yoga is said to give 'svanama-sadrsha phala', so Brahma yoga gives creative / spiritual / Brahma-loka phala.
Shiva Purana — Kotirudra-samhita, Tandi Sahasranama prelude, verses 47-48Tandi (a brahma-yogi) is named as the composer of the Shiva Sahasranama in brahma-yoga — establishes the spiritual-creative significance of the yoga.
Narada Purana — Purvabhaga, Dvitiya-vrata section (Ashunyashayana-vrata), month-wise Dvitiya-vrata (Sankshipta ed., lines 65701-65750) — 'अशुन्यशयन ... चन्द्रमाके लिये अर्घ्यदान'Shravana-Krishna Dvitiya = Ashunyashayana-vrata to Vishnu-Lakshmi with chandra-arghya; Kartika-shukla Dvitiya = Yamadvitiya.
— Purvabhaga, Pratham Pada (Siddhi-yoga prakarana)
Matsya Purana — Surya-vamsha-varnana (origin of Vishti/Bhadra), Vishti as Chhaya's daughter (Gita Press ed., around lines 5851-5900)Vishti (Bhadra) — bhayankara-rupavali tritiya kanya — is established as kala-karana-svarupa, the personification of the inauspicious karana.
Phaladeepika — Santanachinta-prakarana (use of Vishti-karana in muhurta), verse 15 (Hindi-Alt ed., around lines 9801-9850)Phaladeepika explicitly names Vishti-karana as varjya for shubha-karya and for santana-prashna; classical avoidance rule.
Narada Purana — Purvabhaga, Karana-jnana-vidhi (11 karanas including Vishti), around verses 124-125 (sankshipta ed., around lines 34051-34100)Lists the 7 chara + 4 sthira karanas including Vishti (#7) — formula to determine karana from tithi-number.
Narada Purana — Purvabhaga, Chaturthi-vrata section, Sankashta-vrata description (Sankshipta ed., lines 66301-66400) — 'माघ कृष्णा चतुर्थीको संकष्टव्रत बतलाया जाता है'Names Magha-krishna Chaturthi 'Sankashta-vrata'; prescribes upavasa, moonrise arghya to Ganesha/Chandra, gives the arghya mantra and phala.
Skanda Purana — Ganesha-Chaturthi-vrata-mahatmya, Chaturthi-vrata enumeration (Sankshipta ed., Sankashta-chaturthi reference) — moonrise-worship prescriptionAligns with the krishna-paksha chaturthi observance for relief from sankata (calamity).
Narada Purana — Purvabhaga, Jyotish-prakarana (ninda-yoga enumeration), ninda-yoga section (Sankshipta ed., lines 41901-41950) — 'वैधृति और व्यतीपात ये दोनों महापात हैं, इन दोनोंको शुभ कार्योमें सदा त्याग देना चाहिये'Classes vaidhriti+vyatipata as the two great mahapatas; recommends pitru-karma instead during these.
Bhavishya Purana — Uttara-parva, Chaturthi-vrata-kalpa (Angaraka-chaturthi-vrata-varnana), Chaturthi-vrata chapter (DLI Hindi ed., around lines 70101-70150)Krishna-Yudhishthira samvada on Chaturthi vrata including Angaraka Chaturthi.
, verses 212-3, 213-4 (Sankshipta ed., lines 41901-41950) — Vishkambha listed as first of 27 yogas; later ninda-yoga group enumerates vishkambha among tyajya-portions
Vishkambha is the 1st nitya-yoga (svami: Yama); first 3 ghatikas to be avoided in all auspicious work.
, Shashthi-stuti section (devi identified as Kartikeya-pranapriya)
, full chapters
Both adhyayas prescribe Saptami-tithi as the supreme day for Surya worship using the twelve-name list (Bhanu/Arka/Ravi/Brahma/Surya/Shakra/Hari/Shiva/Shriman/Vibhavasu/Tvashta/Varuna).
Bhavishya Purana — Brahma Parva, Saptami-kalpa (Akshyanga Saptami adhyaya 111), opening versesBhavishya Purana's Saptami-kalpa is the standard nibandha source for Bhanu/Ravi-Saptami; Sunday + Saptami amplifies it.
(2)
Muhurta Chintamani — Nakshatra-prakarana (Tripushkar-yoga lakshana), verse 50 (Pyarelal Mishra Hindi ed., lines 2076-2099) — 'भद्रातिथी रविजभूतनयार्कवारे ... त्रैपुष्करो भवति'Triples the fruit of any karma done within it.
BPHS — Panchanga-sadhana / Karana-prakarana, standard BPHS section on the 11 karanas (Bava-Balava-Kaulava ... Naga-Kimstughna)BPHS lists the chara-karanas (Bava through Vishti) as repeated 8 times across the 30 tithi-halves; Bava is the first and most auspicious.
Devi Bhagavata — Skandha 3, Navaratri-vidhi (importance of Ashtami), Ashtami pujan prescription (Vol. 1 Gita Press ed., around lines 45751-45800)If unable to do full nine-day Navaratri, Ashtami tithi must be observed; references Daksha-yajna context.
Narada Purana — Uttarabhaga, Ekadashi-vrata-mahatmya (Rukmangada-Mohini samvada), Rukmangada vrata-pratijna (Sankshipta ed., lines 76451-76550) — 'एकादशीके दिन भोजन कैसे करूँगा ... मधुसूदनके पुण्यमय दिवस एकादशीको अन्नका सेवन नहीं करूँगा'King Rukmangada's vow never to take food on Ekadashi establishes the canonical fasting rule; Thursday (Guru/Vishnu's vara) intensifies the merit.
Brahma Vaivarta Purana — Krishna-janma-khanda (Ekadashi-vrata prescription), Dharmaraja-Vasundhara samvada (Gita Press ed., lines 27701-27750) — Vishnu-bhakti centrality of EkadashiIdentifies Vishnu-seva as the supreme dharma; Ekadashi to Thursday (Vishnu/Guru) doubly auspicious for the vrata.
(2)
Narada Purana — Purvabhaga, Ekadashi-vrata section, Ekadashi-vrata-mahatmya (sankshipta ed., text around lines 14901-14950)Detailed rules on dashami-viddha vs dvadashi-viddha Ekadashi, fasting and parana.
Brahma Vaivarta Purana — Krishna-janma-khanda, Ekadashi-vrata prescription, Ekadashi-upavasa section (sankshipta ed., text around lines 71651-71700)All Vaishnavas, yatis, widows, brahmacharis are to fast on every Ekadashi.
BPHS — Panchanga-sadhana / Karana-prakarana, standard BPHS section on the 11 karanas (Bava-Balava-Kaulava ... Naga-Kimstughna)BPHS lists the chara-karanas (Bava through Vishti) as repeated 8 times across the 30 tithi-halves; Bava is the first and most auspicious.
, Pyarelal Mishra ed., around lines 2971-3001 (jatakarma/namakarma section listing Anuradha among auspicious shubha nakshatras)
Anuradha is among auspicious shubha-nakshatras for jatakarma/namakarma; Anuradha is Sani-svami (Saturn's own nakshatra), so Saturday + Anuradha is a vara-svami yoga revered for bhakti and karya-siddhi.
Skanda Purana — Maheshwara Khanda (gopa-balaka pradosha narrative), around shloka cluster cited at p.~889 of Gita Press Sankshipt edition (shanivara-pradosha worship)
(2)
Muhurta Chintamani — Samskara-prakarana (Pradosha-lakshana), verse 55 (Pyarelal Mishra Hindi ed., lines 3616-3650) — 'अर्कतर्कत्रितिथिषु प्रदोषः स्यात्'Defines pradosha-kala as the half-prahar around sunset on Trayodashi, Chaturdashi, Pratipad and other listed tithis.
Skanda Purana — Pradosha-vrata-mahatmya (Chandrasena and Shrikara legend), section on Pradosha-shivapujana (Sankshipta ed., lines 88951-89000)Anjananandana Hanuman teaches the gopa Shrikara the discipline of Pradosha Shiva worship.
Establishes Mula's Nirriti/Varuna devata-vibhaga and prescribes mahashanti — confirming Mula's intense, occult character that intensifies on Amavasya.
Skanda Purana — Pitru-tarpana-mahatmya (Amavasya pitru-karma section), amavasya-shraddha prescriptions (Sankshipta ed., lines 157351-157400) — 'प्रमादी वंशज पितरोंका तर्पण नहीं करते, तब उनके पितर ... भूख-प्याससे व्याकुल'Amavasya is the canonical pitru-tarpana day; combined with Mula (Nirriti/Ketu nakshatra) it becomes the rare Mula-Amavasya for tantric Pitru-Ketu sadhana.
Skanda Purana — Avantya-khanda, Somavati-Shipra section, opening of Somavati-Shipra mahatmyaSomavati Amavasya named as supreme parva for snana, dana, japa, and homa; punya is akshaya.
Skanda Purana — Reva-khanda, Narmada-Kubja sangama section, Somavati Amavasya parva listLists Somavati Amavasya alongside Vyatipata, Sankranti, Vaidhriti, Vishuva, and Ayana-arambha as utkrshta parvas.
(2)
Skanda Purana — Pitri-kalpa / Tithi-pravachana, amavasya definition section'Yogon mein vyatipata, nakshatron mein shravana, tithiyon mein amavasya aur purnima tatha sankranti-kala -- ye sab dana-karma mein pavitra mane gaye hain.' Amavasya named first among agnishvattadi pitarana priya tithis.
Muhurta Chintamani — Samvatsara-prakarana, Sun-avastha on Sankranti, verse 13Sun in Kimstughna karana described as 'urdhva' (upright, sama) — 'sama: shreshtha ihardhavarshane', i.e. neutral-to-mildly auspicious.
