Jewish Calendar or Hebrew Calendar is a "Luni-Solar" calendar. The calendar followed is a 12 month moon calendar, with an extra month added every few years to synchronise with the solar years. While the months are lunar months the years are solar years.
The months of Jewish Calendar consists of either 29 days or 30 days. The Jewish month begins on a new moon.
In Jewish Calendar, Names of the days in a week are called First Day, Second Day and so on till the sixth day. The seventh day of the week is called Shabbat.
The day in Jewish Calendar starts in the sunset. In Hebrew Calendar, Day hours are calculated by dividing the daylight duration of the day into 12 parts. Similarly night hours are calculated by dividing the night duration of the day into 12 parts.
Week in a Jewish Calendar
|Day of the week||Name of the day||Name of the day(Hebrew)||Equivalent day in Gregorian Calendar|
|1||First Day||Yom Rishon||Sunday|
|2||Second Day||Yom Sheni||Monday|
|3||Third Day||Yom Sh'lishi||Tuesday|
|4||Fourth Day||Yom Revi'i||Wednesday|
|5||Fifth Day||Yom Chamishi||Thursday|
|6||Sixth Day||Yom Shishi||Friday|
|7||Holy Shabbat||Shabbat Kodesh||Saturday|
|Name of the Jewish Month||Gregorian Month||Gregorian Equivalent||Important Days|
|Tishri||30||September-October||Yom Teruah, Yom Kippur, Sukkot|
|Adar||February-March||29(30 days during leap year)||Purim|
On a leap year an Adar I with 30 days is added followed by the Adar II with 29 days.