Ruling · Kālī Pūjā (Śyāmā Pūjā) · 2085

Thursday 18 October

Boundaryin Baoding, under the Rashtriya Panchang method. Both nights qualify and the rule does not say which to take. Say “contested”.

Decide it for

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two nights

One ghaṭī is 24 minutes. Niśītha is 1 ghaṭikā either side of midnight.

Night of Wednesday 17 October

Qualifies with 47 of 48 minutes. Not taken.

niśītha begins 23:40  00:28 niśītha ends
Amāvasyā begins 23:41:09
22:5223:1623:4000:0400:2800:5201:16

47 of 48 minutes covered, the last 47

Night of Thursday 18 October

Taken. Both nights qualify; the rule is silent, and this one is covered longer.

niśītha begins 23:40  00:28 niśītha ends
Amāvasyā ends 01:01:15
22:5223:1623:4000:0400:2800:5201:16

48 of 48 minutes covered

Amāvasyā presentNiśītha, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Amāvasyā runs from 23:41 on Wed 17 Oct to 01:01 on Fri 19 Oct.

    2085-10-17T15:41:10Z → 2085-10-18T17:01:16Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 23:40–00:28 on the 17th, 23:40–00:28 on the 18th.

    nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Amāvasyā must be present during niśītha. It covers 47 of 48 minutes on the 17th and 48 of 48 on the 18th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Both nights qualify and the rule marks neither. The one covered longer is ruled, as a boundary.

    priority: unstated → greater-coverage · margin 76 s < 300 s

  5. 05

    Ruling

    Kālī Pūjā, Baoding, 2085: Thursday 18 October.

    confidence: boundary (margin, tie-break-unstated)

Say it like this

In Baoding, Kālī Pūjā 2085 falls on Thursday 18 October. Amāvasyā runs from 23:41 on Wed 17 Oct to 01:01 on Fri 19 Oct and covers all of niśītha that night. It also reaches the previous night for 47 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 1 min 16 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/2085/kali-puja · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 18 Oct
Ahargaṇa, classicalDisc centre, no refractionThu 18 Oct
compat-drikpanchangComparison profileThu 18 Oct
No institution has a recorded ruling for Baoding.

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

The rule, as data

/rules/kali-puja · ruleset 2026.3-draft

Month
Āśvina, amānta
Pakṣa · aṅga
Kṛṣṇa · Amāvasyā
Kāla
Niśītha
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 104

“K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceAmāvasyāNiśītha 17thCoveredNiśītha 18thCoveredRuled
Los Angeles08:41 → 10:0100:1548 min00:140 min17 Oct
Chicago10:41 → 12:0100:1248 min00:120 min17 Oct
Jersey City11:41 → 13:0100:1848 min00:180 min17 Oct
Port of Spain11:41 → 13:0123:2748 min23:270 min17 Oct
London16:41 → 18:0100:2248 min00:220 min17 Oct
Durban17:41 → 19:0123:1748 min23:170 min17 Oct
Dubai19:41 → 21:0123:4048 min23:400 min17 Oct
Delhi21:11 → 22:3123:4348 min23:430 min17 Oct
Kolkata21:11 → 22:3122:5848 min22:580 min17 Oct
Singapore23:41 → 01:0100:2648 min00:2635 min17 Oct
Sydney02:41 → 04:0100:160 min00:1648 min18 Oct
Suva03:41 → 05:0123:280 min23:2748 min18 Oct
Profile · tradition
pac-rp@2026.1 · smarta
Rule
kali-puja@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

About Ahargaṇa