Ruling · Jitāṣṭamī (Jitiya) · 1991

Tuesday 1 October

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 28 minutes.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two evenings

One ghaṭī is 24 minutes. Pradoṣa is 2 muhūrtas after sunset.

Evening of Monday 30 September

Aṣṭamī is absent from pradoṣa. Not taken.

17:23 sunsetpradoṣa ends 19:01
16:5917:2317:4718:1118:3518:5919:23

0 of 98 minutes covered

Evening of Tuesday 1 October

Taken. The only evening Aṣṭamī reaches.

17:21 sunsetpradoṣa ends 19:00
16:5717:2117:4518:0918:3318:5719:21

98 of 98 minutes covered

Aṣṭamī presentPradoṣa, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Aṣṭamī runs from 21:29 on Mon 30 Sep to 19:28 on Tue 1 Oct.

    1991-09-30T13:29:27Z → 1991-10-01T11:28:14Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:23–19:01 on the 30th, 17:21–19:00 on the 1st.

    pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Aṣṭamī must be present during pradoṣa. It covers 0 of 98 minutes on the 30th and 98 of 98 on the 1st.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

    Only one evening qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 1707 s

  5. 05

    Ruling

    Jitāṣṭamī, Daqing, 1991: Tuesday 1 October.

    confidence: determinate

Say it like this

In Daqing, Jitāṣṭamī (Jitiya) 1991 falls on Tuesday 1 October. Aṣṭamī runs from 21:29 on Mon 30 Sep to 19:28 on Tue 1 Oct and covers all of pradoṣa that evening.

ahargana.org/daqing/festivals/1991/jitashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 1 Oct
Ahargaṇa, classicalDisc centre, no refractionTue 1 Oct
compat-drikpanchangComparison profileTue 1 Oct
No institution has a recorded ruling for Daqing.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/jitashtami · ruleset 2026.3-draft

Month
Bhādrapada, amānta
Pakṣa · aṅga
Kṛṣṇa · Aṣṭamī
Kāla
Pradoṣa
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 103

“K 8 Mahalaksmi vrata samapana (current at moonrise), Jitastami (pradosa), Jimutavahana puja” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceAṣṭamīSunset 30thCoveredSunset 1stCoveredRuled
Los Angeles06:29 → 04:2818:3997 min18:370 min30 Sep
Chicago08:29 → 06:2818:3498 min18:330 min30 Sep
Jersey City09:29 → 07:2818:4098 min18:390 min30 Sep
Port of Spain09:29 → 07:2817:5796 min17:560 min30 Sep
London14:29 → 12:2818:4199 min18:390 min30 Sep
Durban15:29 → 13:2817:5693 min17:570 min30 Sep
Dubai17:29 → 15:2818:0796 min18:060 min30 Sep
Delhi18:59 → 16:5818:0946 min18:080 min30 Sep
Kolkata18:59 → 16:5817:262 min17:250 min30 Sep
Singapore21:29 → 19:2818:580 min18:5731 min1 Oct
Sydney23:29 → 21:2817:560 min17:5793 min1 Oct
Suva01:29 → 23:2818:030 min18:0394 min1 Oct
Profile · tradition
pac-rp@2026.1 · smarta
Rule
jitashtami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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