Ruling · Bhogi · 1938

Thursday 13 January

Determinatein Tehran, under the Rashtriya Panchang method. Kept the day before Pongal, Fri 14 Jan. Clear of every threshold by 369 minutes.

Decide it for

35°42′ N 51°25′ E · Asia/Tehran · GeoNames 112931

The two days

A tick is five ghaṭīs, two hours. The day is counted from the sunset before it to its own sunset.

Day of Thursday 13 January

The transit does not fall in this day. Not taken.

17:10 sunset beforesunset 17:11
16:4620:4600:4604:4608:4612:4616:46

Does not fall in this day

Day of Friday 14 January

Taken for Pongal. The transit falls in this day. Bhogi is the day before.

17:11 sunset beforesunset 17:12
Sun enters Makara 23:20:39
16:4720:4700:4704:4708:4712:4716:47

Falls in this day

The day, the window the rule readsThe instant the Sun enters Makara

How it was decided

  1. 01

    Aṅga

    The Sun enters Makara at 23:21 on Thu 13 Jan.

    1938-01-13T19:50:39Z · nirayana, lahiri-iae1985

  2. 02

    Kāla

    The day is counted from the sunset before it to its own sunset: the day of the 13th ends at 17:11, and the day of the 14th ends at 17:12.

    sunset-day: sunset-to-sunset · sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    The festival is kept on the day of the transit, the day counted from the sunset before it: a transit after sunset belongs to the next day. The transit falls between the sunsets of the 13th and the 14th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106

  4. 04

    Tie-break

    An instant falls in one day and no other. No tie-break is needed.

    day counted from sunset → only-day · margin 22153 s

  5. 05

    Counted

    Bhogi is kept the day before Pongal: Friday 14 January is the day taken above.

    follows: pongal − 1 d

  6. 06

    Ruling

    Bhogi, Tehran, 1938: Thursday 13 January.

    confidence: determinate

Say it like this

In Tehran, Bhogi 1938 falls on Thursday 13 January. It is kept the day before Pongal, which falls on Friday 14 January. The Sun enters Makara at 23:21 on Thu 13 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th. Counted from midnight, or counted from sunrise, as in Orissa, it is 12 January.

ahargana.org/tehran/festivals/1938/bhogi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 13 Jan
Ahargaṇa, classicalDisc centre, no refractionThu 13 Jan
compat-drikpanchangComparison profileThu 13 Jan
Counted from midnightCRC 1955, p. 106Wed 12 Jan
Counted from sunrise (the Orissa rule)CRC 1955, p. 244Wed 12 Jan
No institution has a recorded ruling for Tehran.

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

The rule, as data

/rules/bhogi · ruleset 2026.3-draft

Sign entered
Makara
Zodiac
Nirayana
Ayanāṃśa
lahiri-iae1985
Day counted from
Sunset
Tie-break
None: an instant
Kept
The day before Pongal

“Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106. “The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day.” Calendar Reform Committee 1955, Rules of Samkranti, p. 244.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceSun enters MakaraSunset before 13thCoveredSunset before 14thCoveredRuled
Los Angeles11:5117:04falls17:04no12 Jan
Chicago13:5116:41falls16:42no12 Jan
Jersey City14:5116:50falls16:51no12 Jan
Port of Spain15:5118:01falls18:01no12 Jan
London19:5116:15no16:17falls13 Jan
Durban21:5119:01no19:01falls13 Jan
Dubai23:5117:48no17:49falls13 Jan
Delhi01:2117:43no17:44falls13 Jan
Kolkata01:2117:10no17:11falls13 Jan
Singapore03:1118:34no18:35falls13 Jan
Sydney05:5119:10no19:10falls13 Jan
Suva07:5118:48no18:48falls13 Jan
Profile · tradition
pac-rp@2026.1 · smarta
Rule
bhogi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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