Menghitung waktu shalat
Kitab tibyanul miyqot dan konversi rumus cosinus
| Tanggal = 16 Juni 2016
Kota = Indramayu Lintang = -6o33’
|
- Menghitung Darojatus Syamsi
Tanggal = 16 Juni = Jauza’
Tafawut = 09 +
Darojat S = 25 = Jauza’
- Menghitung mail awal (deklinasi)
Tanggal = 16 Juni
Tafawut = 09
Darojat S = 25 = Jauza’ Syimali
Mail awal = 23 21 ( + )[1]
Rumus cosinus :
Bu’du darojat = 60 + darojatu syams
Mail awal = sin dek = (sin bu’du darojat x sin mail kully)
= sin dek = (sin(60+25) x sin23o27’)
= 23o21’19.65”
- Mencari bu’dul qutur
Tanggal = 16 Juni
Lintang Indramayu = 6 33
Jaibnya = 7 08
Mail awal = 23 21
Bu’dul qutur = 2 43
Rumus cosinus :
Bu’dul Quthr = Sin Φx . Sin δ . 60
= (sin -6o 33’x sin 23o21o x 60)
= 2o42’45.66”
- Mengetahui asal mutlaq
= 90 00
Ardulbalad = 6 33 –
Tamamnya = 83 27
Jaib tamamnya = 59 36
= 90 00
Mail awal = 23 21 –
Tamamnya = 66 39
Asal mutlaq = 54 44
Rumus cosinus :
Asal mutlaq = cos δ x cos Φx x 60
= cos 23 o 21’ x cos -6 o 33’ x60
= 54 o43’35.35”
- Mengetahui nisful fudlah
Asal mutlaq = 54 44
Bu’dulqutur = 2 43
Nisfulfudlah = 2 51
Rumus cosinus :
Nisful fudlah = sin = ( tan Φx x tan δ)
= sin = (tan-6 o 33’ x tan23 o 21’)
= 2 o50’28.33”
- Mengetahui ghoyatul irtifa’
Tamamnya Ardulbalad = 83 27
Mail awal = 23 21 – (syimali)[2]
Ghoyah = 60 6
Rumus cosinus :
Ghoyatul irtifa’ = tan ( 1 / ( tan ( abs (Φx – δ ))))
= tan (1/ (tan (abs (-6 o33’ – 23 o21’))))
= 60o06’00”
MENGHITUNG WAKTU SHALAT
16 JUNI 2016
- MAGHRIB
Jam = 6
Sa’ah Nisfulfudlah = 0 11 24 – syimaly
Jumlah = 5 48 36
Daqo’ikuttamkin = 0 03 30 +
Waktu maghrib jam = 5 52 15
Sa’ah nisfulfudlah = (nisfulfudlah x 0o4’)
- ‘ISYA
Jaibnya 17o = 17 32
Bu’dulqutur = 2 43 – syimaly
Asal mu’adal = 14 49
Asal mutlaq = 54 44
Waktu isya jam = 7 05
Rumus cosinus :
Sin hasil = (asal mu’adal : asal mutlaq)
= (14o49’ : 54o44’)
= 15o42’22.71”
Hasil dhorbi = hasil x 0o4’
= 15o42’22.71” x 0o4’
= 1o02’49.51”
Waktu’ isya = 6 + Hasil dhorbi + ihtiyat (0o2’)
= 6 + 1o02’49.51” + 0o2’
= 7o04’49.51”
- SUBUH
Jaibnya 19o = 19 32
Bu’dulqutur = 2 43 – syimaly
Asal mu’adal = 16 49
Asal mutlaq = 54 44
Waktu subuh jam = 4 51
Rumus cosinus :
Cos hasil = (asal mu’adal : asal mutlaq)
= (16o49’ : 54o44’)
= 72o06’23.7”
Hasil dhorbi = hasil x 0o4’
= 15o42’22.71” x 0o4’
= 4o48’25.58”
Waktu’ subuh = Hasil dhorbi + ihtiyat (0o2’)
= 4o48’25.58” + 0o2’
= 4o50’25.58”
- IMSAK
Waktu subuh – 0o5’(ihtiyat)
= 4o51’ – 0o5’
Waktu imsak = 4o46’00”
- WAKTU DHUHA
Jaibnya 4o30’ = 4 42
Bu’dulqutur = 2 43 – syimaly
Asal mu’adal = 1 59
Asal mutlaq = 54 44
Waktu dhuha jam = 5 52
Rumus cosinus :
Cos hasil = (asal mu’adal : asal mutlaq)
= (1o59’ : 54 o44’)
= 87 o55’24.9”
Hasil dhorbi = hasil x 0 o4’
= 87 o55’24.9”x 0 o4’
= 5 o51’41.61”
Waktu’ dhuha = Hasil dhorbi + ihtiyat (0 o2’)
= 5 o51’41.61”+ 0 o2’
= 5o53’41.61”
- DHUHUR
= 12
Daqo’ikuttamkin = 0 03 30 +
Waktu dhuhur jam = 12 03 30
- ASAR
Tamamnya ardulbalad = 83 27
Mail awal = 23 21 – syimaly
Ghoyah = 60 06
Qomah = 7
Dhil mabsut = 2 +
Dhil asar = 9
Irtifa’ asar = 37 53
Jaibnya = 36 51
Bu’dulqutur = 2 43 – syimaly
Asal mu’adal = 34 08
Asal mutlaq = 54 44
Waktu asar jam = 3 28
Rumus cosinus :
Irtifa’ al-‘Ashr = tan τ = Qomah al-Aqdam : Dzil al-‘Ashr
= 7 : 9
= 37o 52’ 29,94”
Jaib Irtifa’ al-‘Ashr = sin Irtifa’ al-‘Ashr x 60
= sin 37o 52’ 29,94” x 60
= 36o 50’ 11,17”
Asal Mu’addal = Jaib Irtifa’ al-‘Ashr – Bu’dul Quthr
= 36o 50’ 11,17” – 2o43’
= 34o07’11.17”
Cos hasil = (asal mu’adal : asal mutlaq)
= 34o07’11.17” : 54o44’
= 51o26’11.32”
Hasil dhorbi = hasil x 0 o4’
= 51o26’11.32” x 0 o4’
= 3 o25’44.75”
Waktu’ asar = Hasil dhorbi + ihtiyat (0 o2’)
= 3 o25’44.75”+ 0 o2’
= 3 o27’44.75”
| Maghrib | Isya | Subuh | Imsak | Dhuha | Dhuhur | Asar |
| 5:53 | 7:05 | 4:51 | 4:46 | 5:54 | 12:04 | 3:28 |
[1] karena jadyu termasuk buruj Syimali atau buruj yang terletak di Utara Equator, maka nilai mail tersebut adalah positif
[2] Jika mail syimali maka di kurangi dan jika mail januby maka di tambahkan
