Ruling · Gaṇeśa Caturthī · 2015

Thursday 17 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 595 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

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

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Wednesday 16 September

Caturthī is absent from madhyāhna. Not taken.

madhyāhna begins 11:49  12:37 madhyāhna ends
11:0111:2511:4912:1312:3713:0113:25

0 of 48 minutes covered

Midday of Thursday 17 September

Taken. The only midday Caturthī reaches.

madhyāhna begins 11:49  12:37 madhyāhna ends
11:0111:2511:4912:1312:3713:0113:25

48 of 48 minutes covered

Caturthī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Caturthī runs from 22:32 on Wed 16 Sep to 00:51 on Fri 18 Sep.

    2015-09-16T14:31:34Z → 2015-09-17T16:50:41Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 16th, 11:49–12:37 on the 17th.

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

  3. 03

    Rule

    Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 16th and 48 of 48 on the 17th.

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

  4. 04

    Tie-break

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

    priority: purvaviddha → only-day · margin 35680 s

  5. 05

    Ruling

    Gaṇeśa Caturthī, Baoding, 2015: Thursday 17 September.

    confidence: determinate

Say it like this

In Baoding, Gaṇeśa Caturthī 2015 falls on Thursday 17 September. Caturthī runs from 22:32 on Wed 16 Sep to 00:51 on Fri 18 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2015/ganesha-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 17 Sep
Ahargaṇa, classicalDisc centre, no refractionThu 17 Sep
compat-drikpanchangComparison profileThu 17 Sep
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/ganesha-chaturthi · ruleset 2026.3-draft

Month
Bhādrapada, amānta
Pakṣa · aṅga
Śukla · Caturthī
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 103

“S 4 Varada caturthi (purvaviddha, madhyahnavyapini), Samvatsari parva (Jain-caturthi paksa), Saubhagya caturthi (Bengal), Ganesa caturthi (madhyahna vyapini and purvaviddha)” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceCaturthīMadhyāhna 16thCoveredMadhyāhna 17thCoveredRuled
Los Angeles07:32 → 09:5112:2448 min12:230 min16 Sep
Chicago09:32 → 11:5112:2148 min12:210 min16 Sep
Jersey City10:32 → 12:5112:2748 min12:2624 min16 Sep
Port of Spain10:32 → 12:5111:3748 min11:3748 min16 Sep
London15:32 → 17:5112:310 min12:3148 min17 Sep
Durban16:32 → 18:5111:270 min11:2748 min17 Sep
Dubai18:32 → 20:5111:500 min11:4948 min17 Sep
Delhi20:02 → 22:2111:520 min11:5248 min17 Sep
Kolkata20:02 → 22:2111:070 min11:0748 min17 Sep
Singapore22:32 → 00:5112:360 min12:3548 min17 Sep
Sydney00:32 → 02:5111:270 min11:2648 min17 Sep
Suva02:32 → 04:5111:380 min11:3748 min17 Sep
Profile · tradition
pac-rp@2026.1 · smarta
Rule
ganesha-chaturthi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

About Ahargaṇa