The Dawn Sky Brightness Observations in the Preliminary Shubuh Prayer Time Determination

Abstract

<span class="mceitemhidden"><span lang="IN">The indication of began to enter the shubuh prayer time is when emerge the morning dawn and lasted until the sun rises. The sun</span></span><span class="apple-converted-space"><span lang="IN"> </span></span><span class="hiddensuggestion"><span lang="IN">position</span></span><span class="apple-converted-space"><span lang="IN"> </span></span><span class="mceitemhidden"><span lang="IN">when emerge the morning dawn is below the intrinsic horizon marked with a minus sign (-) with the value of a certain height. The Ministry of Religious Affairs has set the sun altitudes of dawn in the shubuh prayer time with minus (-) 19°+ sunrise/sunset altitudes as standard is the reference time of dawn prayers in Indonesia. However, this provision in fact reap discourse in some quarters because it is not</span></span><span class="apple-converted-space"><span lang="IN"> </span></span><span class="hiddengrammarerror"><span lang="IN">in accordance with</span></span><span class="apple-converted-space"><span lang="IN"> </span></span><span class="mceitemhidden"><span lang="IN">the phenomenon of morning dawn emergence at the beginning of the shubuh prayer time empirically. This study aims to decide the morning dawn, as the beginning of dawn determinant</span></span><span class="mceitemhidden"><span lang="IN">.</span></span><span class="apple-converted-space"><span lang="IN"> </span></span><span class="mceitemhidden"><span lang="IN">The tool used in this study is the Sky Quality Meter (</span></span><span class="hiddenspellerror"><span lang="IN">SQM</span></span><span class="mceitemhidden"><span lang="IN">), to detecting the morning dawn emergence as a sign of the beginning of the shubuh prayer time. The results of this study found that the brightness of the sky throughout the night or the morning dawn in</span></span><span class="apple-converted-space"><span lang="IN"> </span></span><span class="hiddenspellerror"><span lang="IN">Tayu</span></span><span class="apple-converted-space"><span lang="IN"> </span></span><span class="mceitemhidden"><span lang="IN">Beach,</span></span><span class="apple-converted-space"><span lang="IN"> </span></span><span class="hiddenspellerror"><span lang="IN">Pati</span></span><span class="mceitemhidden"><span lang="IN">, Central Java, in the span of four days of observation that is at 4: 31 </span></span><span class="mceitemhidden"><span lang="EN-GB">a.m</span></span><span class="mceitemhidden"><span lang="IN"> with an average altitude of the sun is -17°(17°below the horizon)</span></span><span class="mceitemhidden"><span lang="IN">.</span></span>