B15
Hebrew Calendar
| NISAN (ABIB) March—April | 14 Passover 15-21 Unleavened Bread 16 Offering of firstfruits | Jordan swells from rains, melting snow | Barley | 
| IYYAR (ZIV) April—May | 14 Late Passover | Dry season begins, mostly clear skies | Wheat | 
| SIVAN May—June | 6 Festival of Weeks (Pentecost) | Summer heat, clear air | Wheat, early figs | 
| TAMMUZ June—July | Heat increases, heavy dews in areas | First grapes | |
| AB July—August | Heat reaches maximum | Summer fruits | |
| ELUL August—September | Heat continues | Dates, grapes, and figs | |
| TISHRI (ETHANIM) September—October | 1 Trumpet blast 10 Day of Atonement 15-21 Festival of Booths 22 Solemn assembly | Summer ends, early rains begin | Plowing | 
| HESHVAN (BUL) October—November | Light rains | Olives | |
| CHISLEV November—December | 25 Festival of Dedication | Rain increases, frost, mountain snows | Flocks wintered | 
| TEBETH December—January | Maximum cold, rainy, mountain snows | Vegetation developing | |
| SHEBAT January—February | Cold weather lessens, rain continues | Almond blossoms | |
| ADAR February—March | 14, 15 Purim | Frequent thunder and hail | Flax | 
| VEADAR March | Intercalary month added seven times in 19 years |