Ramadan 2027 in Indonesia: when the fast begins
The tool below computes the conjunction and the expected start of a Hijri month. The countdown to 1 Ramadan 1448 uses the estimated date.
Time left until Until 1 Ramadan 1448 (estimate), 8 February 2027
102days17hrs0min0sec
1 Ramadan 1448 AH
8 February 2027
Estimate; set by the Minister of Religious Affairs after the isbat session.
| Conjunction (astronomical new moon) | Mon 8 March, 16.29 WIB |
| Crescent sighting on the evening of | Sun 7 February |
| If the crescent is not seen | Tue 9 February |
Conjunction computed with Meeus's formula (accurate to a few minutes). Night of the conjunction: Mon 8 March.
Prepared by Radif Partners · Method · decrees reread on 28 October 2026
The start of Ramadan 1448 is expected on Monday, 8 February 2027. The date is not official: the 2027 decree does not list it because it is not a holiday, and the Minister of Religious Affairs sets it after the isbat session on the evening of 29 Sha'ban. The computation runs as follows. The conjunction, or new moon, occurs on Saturday, 6 February 2027 at 22.56 WIB, after sunset. On that evening there is no crescent yet. A day later, on the evening of Sunday, 7 February 2027, the moon is about nineteen hours old, and by our computation its altitude is very likely to meet the criteria the government uses. So 1 Ramadan is expected on Monday 8 February, with the first tarawih prayer on Sunday evening 7 February. If the crescent is not seen, Sha'ban is completed and the fast starts on Tuesday 9 February. With Eid on 10 March under the decree, Ramadan 2027 lasts 30 days if it starts on 8 February.
Conjunctions and month starts around Ramadan 1448
| Event | Date | Status |
|---|---|---|
| Conjunction before Ramadan | Saturday, 6 February 2027, 22.56 WIB | computed (Meeus) |
| 1 Ramadan 1448 | Monday, 8 February 2027 | estimate |
| Conjunction before Shawwal | Monday, 8 March 2027, 16.29 WIB | computed (Meeus) |
| 1 Shawwal 1448 (Eid al-Fitr) | Wednesday, 10 March 2027 | official (decree) |
| 1 Ramadan 1449 | Friday, 28 January 2028 | estimate |
Why the start date is only certain the day before
The government combines computation (hisab) with sighting (rukyat). A computation team works out the moon's position, then observers at dozens of sites try to see the crescent on the evening of 29 Sha'ban. The results are discussed in the isbat session and announced the same night; an example is the Eid al-Fitr 1446 ruling. The visibility criteria used by Indonesia, Malaysia, Brunei and Singapore require a minimum altitude and elongation. The conjunction times in our table use Meeus's formula, checked against NASA tables; we do not compute the crescent's altitude at each site.
The Umm al-Qura calendar also puts 1 Ramadan 1448 on 8 February 2027. The Eid date comes from the 2027 joint decree. See also Eid 2027 and the Hijri calendar.
First day of Ramadan 2028
First day of Ramadan 2028
28 January 2028
| Hijri date | 1 Ramadan 1449 AH |
| Javanese market day | Jumat Kliwon |
| Linked collective leave | none |
| Days off in a row | no long weekend |