Rosh Chodesh Tamuz Date. Tammuz is not entirely without good. Since rosh chodesh tammuz marks the beginning of a season of teshuvah (repentance) and the three weeks of sorrow, we humbly ask the lord to help us turn to him with all our hearts.
Visible sunrise (hanetz hachama) in new york: Soon will begin the 3 weeks from the 17th of tammuz until tisha b’av.