Jewish Calendar

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The Hebrew lunar calendar (i.e., luach ha'yare'ach ha'ivri: לוח הירח העברי) is 'set' differently than the solar calendar. The day begins at sundown; the climactic day of the week is Shabbat - the seventh day of the week; the moon and its phases in the night sky are the timepiece for the months, and the seasons of the year are marked. Below is the Hebrew Calender starting with the 1st month of each year, ending with the last month of each year. This is the calender God uses He has NEVER! Used or based any of His works on the Gregorian calender. Jewish Holidays TheRebbe.org Jewish.tv Audio Classes News Cooking Kabbalah Online The Jewish Woman Jewish Kids Chabad.org is a division of the Chabad - Lubavitch Media Center Under the auspices of the Lubavitch World Headquarters. The Jewish calendar is primarily lunar, with each month beginning on the new moon, when the first sliver of moon becomes visible after the dark of the moon. In ancient times, the new months used to be determined by observation. When people observed the new moon, they would notify the Sanhedrin. Later Jewish writers agree that the calendar was fixed by Hillel II. In the year 670 of the Seleucidan era; that is, 4119 A.M. Some, however, as Isaac Israeli, have fixed the date as late as 500. Saadia afterward formulated calendar rules, after having disputed the correctness of the calendar established by the Karaites.

By Konstantin Bikos

Jewish communities around the world use the Jewish or Hebrew calendar to determine the dates of religious observances and rituals. In Israel, it is also used for agricultural and civil purposes, alongside the Gregorian calendar.

Sun, Moon, and Holy Scripture

Jewish Calendar

Jewish time reckoning is lunisolar, which means that the calendar keeps in sync with the natural cycles of both the Sun and the Moon. Featuring a body of complex regulations, exceptions, and mathematical rules, it is also designed to satisfy a number of requirements conveyed in the Jewish Holy Scripture.

The Hebrew calendar is a comparatively imprecise system in terms of reflecting the duration of a solar year, which is the time it takes Earth to complete a full orbit around the Sun. In comparison with the timing of the astronomical seasons, it is off by 1 day every 216 years.

Calendar Structure

A year in the Hebrew calendar can be 353, 354, 355, 383, 384, or 385 days long.

Regular common years have 12 months with a total of 354 days. Leap years have 13 months and are 384 days long. Months with uneven numbers usually have 30 days, while months with even numbers have 29 days.

In addition to these regular (kesidrah) year lengths, both common and leap years can be a day shorter (cheserah or deficient year with 353/383 days) or a day longer (shlemah or complete year with 355/385 days).

These alterations are designed to prevent Rosh Hashana and other holidays from falling on certain days of the week. In practice, a day is added to the 8th month (Marcheshvan) or subtracted from the 9th month (Kislev).

In civil contexts, a new year in the Jewish calendar begins on Rosh Hashana on Tishrei 1. However, for religious purposes, the year begins on Nisan 1.

When Was Year 1?

According to Hebrew time reckoning we are now in the 6th millennium. The Hebrew year count starts in year 3761 BCE, which the 12th-century Jewish philosopher Maimonides established as the biblical Date of Creation.

Years in the Jewish calendar are designated AM to identify them as part of the Anno Mundi epoch, indicating the age of the world according to the Bible. For example, the beginning of the year 2020 in the Gregorian calendar converts to year AM 5780 in the Jewish calendar.

Leap Year Rules

Like in the Islamic calendar, months in the Jewish calendar are based on the phases of the Moon. Easyusetools for keygen tomtom updates windows 7. Each month begins with the appearance of a Crescent Moon after the New Moon phase and lasts for a full lunation, a Moon cycle encompassing all phases of the Moon.

Since the sum of 12 lunar months is about 11 days shorter than a solar year, a leap month is added every 2 to 3 years, or 7 times in a 19-year cycle. Leap months are meant to keep the calendar in step with the astronomical seasons and make sure that the religious observances occur at the correct time of year, as mentioned in the Torah.

History and Background

The Jewish calendar is based on a history of time reckoning efforts dating back to ancient times. Both Israelite and Babylonian influences played an important role in its development. According to the account of Persian astronomer al-Khwarizmi (c. 780 – 850 CE), most of the features of its modern-day version were in place by the 9th century CE.

In parallel with the modern Islamic calendar, the timing of the months in the early forms of the Jewish calendar depended on actual sightings of the Crescent Moon. However, this practice was gradually changed, and by 1178 CE the calculation of the beginning of a new calendar month had been fully replaced by the mathematical approximation of the moment the Crescent Moon begins to appear (Molad) rather than actual sightings.

Following the biblical calendar would be easy if it wasn’t based on the moon. Since the cycle of the moon does not quite fill out a solar month, and twelve lunar cycles do not quite fill out a solar year, the calendar slowly shifts over time.

Without occasional correction, we would soon be celebrating Passover in December. Every so often, the Jewish calendar compensates by adding an extra month and thereby shifting everything back.

From time to time, teachers in the Hebrew Roots movement attempt to persuade people to abandon the Jewish reckoning of the biblical calendar and adopt an alternative calendar based upon the ripening of barley or other measure of the seasons. They argue for a stricter and more consistent correlation between the phase of the moon and the date of the month than the Jewish version of the biblical calendar offers. They advocate an alternative reckoning of the calendar on the basis that they perceive their interpretation to be more biblically correct. But is it?

Biblically Correct Calendars

From my reading of the Bible, the more biblically correct thing to do is to defer to Jewish authority. The Bible says that when debates over the application of a commandment of the Torah arise, we are to default to the Jewish authorities (Deuteronomy 17:8-13). A debate over the reckoning of the calendar falls into this category.

When introducing the appointed times of the biblical calendar, the LORD said to Moses, “Speak to the people of Israel and say to them, these are the appointed feasts of the LORD that you shall proclaim as holy convocations; they are my appointed feasts” (Leviticus 23:1-2). The words “that you shall proclaim” are understood to be directed to the Jewish authorities. The authorities over the Jewish community have the biblical responsibility of proclaiming the festivals, i.e., announcing the annual festivals and fixing their dates. It’s their job to proclaim the new moons, the new months, and the dates of the festivals. God instituted and ordained the seventy elders over Israel (the Sanhedrin) and the Jewish courts of authorities that decided on the reckoning of the calendar:

Let every person be subject to the governing authorities. For there is no authority except from God, and those that exist have been instituted by God. Therefore whoever resists the authorities resists what God has appointed, and those who resist will incur judgment. (Romans 13:2)

Observing the New Moon

The responsibility for determining the calendar was the first commandment that God gave the nation of Israel when he said to Moses and Aaron, “This month shall be for you the beginning of months. It shall be the first month of the year for you” (Exodus 12:2). The Bible commentator Rashi reckoned Exodus 12:2 as the Torah’s first formal mitzvah (commandment) because it was the first commandment that God gave specifically to the nation of Israel. He noted that the LORD delivered the commandment directly to Aaron and Moses, the leaders of the generation. That is, he gave the leadership the authority to declare the beginning of a new month and determine the biblical calendar.

In the days of the Bible, the people of Israel determined the calendar based upon the sighting of the Rosh Chodesh moon. Sighting of the moon depends upon subjective observations, circumstances, and weather conditions—variables that could lead to multiple opinions about when the new month had begun. In order to keep the whole community on the same day of the month, the nation needed a system of consensus for determining the calendar. Otherwise, those who lived in different areas or who may have been less careful in their observations of the sky would fall out of synchronization with the rest of the people.

This issue becomes critical when attempting to keep commandments that pertain to specific dates. For example, in Exodus 12, God gave the whole community of Israel several date-specific commandments. Consider the situation with the Israelite community in Egypt. If one group of Israelites believed that the new moon should be calculated differently than the majority, or if another group had missed sighting the moon the first night and therefore lagged behind the calendar by a single day, disaster would have ensued. The splinter groups would have failed to mark their houses with the blood on the correct night. The mistake would have cost them their firstborn sons.

The LORD precluded that possibility when he spoke to Moses and Aaron saying, “This chodesh (renewal of the moon) shall be the beginning of months for you” (Exodus 12:2). He thereby determined the first day of the month, synchronizing the community’s calendar:

God showed Moses the moon in its first crescent (chodesh) and said to him, “When the moon renews itself like this it will be the beginning of the month for you.” (Mechilta 1)

Declaring the New Month

The Mishnah describes the ceremony whereby the Sanhedrin used to declare the new moon. Witnesses who sighted the crescent of the new moon traveled immediately to the Sanhedrin. The members of the Sanhedrin cross-examined the witnesses to ensure that they had definitely seen the new moon. Then they declared, “It is sanctified.” They alerted the rest of the nation by means of signal fires and messengers who spread out through the land and through the whole Diaspora.

The commandment to determine the new moon grants the authority to determine the biblical calendar, fix the appointed times, and ascertain the dates for celebrating the biblical festivals. Does the Torah grant that authority to everyone? Is every individual or every individual synagogue, congregation, and community responsible for determining the biblical calendar? If so, no forum for unity could be established, and every person could determine his own calendar according to his own interpretations. Different congregations and communities would fight over the “correct” day for celebrating festivals, and the sanctity of the holy days would be trampled in the mud. Some communities would be celebrating their break-fast at the end of Yom Kippur while others were just beginning the fast. Some would celebrate a month earlier than others. We would fight and argue, breaking the prohibition to “avoid foolish controversies … and strife and disputes about the Torah,” which are “unprofitable and worthless” (Titus 3:9). Therefore, the responsibility of determining the calendar does not fall to us; it falls to the established and recognized leadership of the entire nation of Israel. In the days of the exodus, that was Moses and Aaron.

The Calendar in the Apostolic Period

In the days of the apostles, the Sanhedrin had the authority to determine the calendar.

Jewish Calendar 2024

In the Apostolic Era, various splinter groups such as the Essenes determined their own calendars independently of the Sanhedrin, but in so doing, they severed themselves from the broader community of Israel and made themselves irrelevant. Yeshua and the apostles, however, followed the calendar established by the Jewish authorities in Jerusalem and thereby celebrated the festivals along with the rest of nation. If that was not the case, the New Testament would have made note of the deviation.

Jewish Calendar Today

No King in those Days

Some modern Karaites and Hebrew Roots enthusiasts have opted to return to sighting and determining the new moon. Others have adopted more astronomically correct models of the lunar calendar, thereby fulfilling the verse that says, “In those days there was no king in Israel; everyone did what was right in his own eyes” (Judges 21:25).

Each person may do as he sees fit, but to the same extent that we develop calendars independent of the rest of the Jewish people, we sever ourselves from fellowship and community with the Jewish people and one another. If we truly believe that God’s appointed times are indeed his appointments given to Israel, then we should celebrate those appointments along with all Israel and on Israel’s authority, not independent of the greater people of God.

The Fixed Calendar

Jewish Calendar Conversion

In the fourth century, the Christianized Roman government wanted to stop Christians from observing Passover according to the Jewish reckoning of the calendar. They forbade the Sanhedrin from convening and determining the new moon. The Jewish communities throughout the Diaspora began to determine the calendar independently of one another. Chaos, discord between communities, and disunity resulted. A cloudy day could change the date of Passover. Without a central authority to intercalate an extra month, the seasons began to slide. In a few years, Passover would be falling in December.

Jewish Calendar Printable

To remedy the situation, Rabbi Hillel II used astronomical projections and mathematical equations to create a fixed calendar that all Israel could use to keep the months and festival season synchronized without relying on observation of the moon. We still use Rabbi Hillel’s calendar today. Until a Sanhedrin wielding civil and religious authority over all Israel convenes and alters the arrangement, the calendar of Rabbi Hillel II remains the official standard for determining new moons, biblical months, and the biblical festivals. No rabbi, leader, or group of leaders has the authority to alter what has been set in place by the leadership of Israel. Any persons who attempt to do so can be dismissed because they assume authority that does not belong to them.

Jewish Calendar Month Crossword

The fixed calendar is not a perfect system, and occasionally discrepancies arise between the Jewish calendric date and the actual phase of the moon, and occasionally it might seem that the extra month could have waited another year, but the fixed calendar provides a universal standard set in place by the lawful and recognized authorities over Israel. It needs to suffice until a singular authority over all Israel arises that can correct it. This will happen soon when the soles of our Master Yeshua’s blessed feet rest again upon the Mount of Olives. In that day, he may reinstate the commandment of declaring the new moon by means of observation, or he may declare the new moons himself.





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