הלוח העברי****Hebrew Calendar Basics****

Months 

1. Nissan
2. Iyar
3. Sivan
4. Tamuz
5. Av
6. Elul
7. Tishrei
8. Cheshvan
9. Kislev
10. Tevet
11. Shevat
12. Adar I
13. (Adar II)

Days of the Week:

Yom Rishon - יום ראשון 
Yom Sheni - יום שני 
Yom Shlishi - יום שלישי
Yom Reviʻi - יום רבעי 
Yom Chamishi - יום חמישי 
Yom Shishi - יום ששי 
Yom Shabbat - יום שבת

The Hebrew Calendar is based on the lunar cycle. There are 12 months, of 29 or 30 days.
In a leap year, there is an extra month called Adar I which is added after Shevat, and the Adar that's usually there is referred to as Adar II.


The day in the Hebrew Calendar is calculated from sunset to sunset.