Four Blood Moons: What the Tetrad Claim Said, and How It Turned Out

01Four blood moons make one astronomical tetrad

A lunar eclipse occurs when a full moon moves through Earth's shadow. During totality, sunlight filtered through Earth's atmosphere can color the Moon copper or red. “Blood moon” is a modern popular label, not the technical name and not a phrase the biblical writers use for an eclipse.

A tetrad requires four total lunar eclipses in a row. It does not mean four consecutive full moons. The 2014–15 events were separated by about six lunar months each, as eclipse seasons returned. NASA's five-thousand-year catalog contains 142 tetrads, and their distribution is uneven. Some eras contain clusters. Other stretches lasting centuries contain none, because slowly changing orbital geometry determines whether a sequence remains total.

The previous tetrad occurred in 2003–04. The next comes in 2032–33. That neighboring pair is useful: tetrads are unusual enough to notice, yet they are recurring products of an orbit rather than one unrepeatable arrangement.

02The historical pattern looked stronger from a distance

The case presented to many Christian audiences linked feast-day tetrads with turning points in Jewish history. Three examples carried most of the weight:

• The 1493–94 tetrad followed the 1492 expulsion of Jews from Spain.
• The 1949–50 tetrad followed Israel's May 1948 declaration of statehood and overlapped the period of armistice agreements after the ensuing war.
• The 1967–68 tetrad began on 24 April 1967. The Six-Day War came that June, between its first and second eclipses.

Those dates can feel like brackets around a story. They are real, and the emotional pull is understandable. Jewish survival, displacement and national history are not trivia to be waved away.

The chronology also shifts from example to example. One tetrad begins after the selected event, another after statehood but amid its aftermath, and another before a war. A rule flexible enough to mean “before, during or after” can attach an eclipse to a wide window of history. It becomes even easier when the event category can be war, migration, diplomacy, tragedy or national change.

Earlier tetrads listed in the same feast-linked pattern make the selection problem visible. Sequences in AD 162–63, 795–96, 842–43 and 860–61 are rarely given equal space in the modern-Israel argument. Their existence does not disprove that God may use the heavens. It does show that the proposed rule was assembled from chosen examples rather than applied consistently to the whole record.

03Passover and Sukkot explain the repeated alignment

The advertised four-holiday sequence can sound like four independent coincidences. It is not.

Lunar eclipses can happen only at full moon. Passover begins on the fifteenth day of Nisan, and Sukkot on the fifteenth of Tishri, so both arrive around full moon. The two festivals are six lunar months apart. Eclipses in a tetrad are also separated by roughly six lunar months.

Once the first eclipse lands on Passover, the rhythm does most of the remaining work: autumn points toward Sukkot, spring returns to Passover, and autumn returns to Sukkot. Calendar intercalation and the edges of eclipse seasons can break the match, so not every tetrad aligns. But the four dates do not supply four separate rolls of the dice.

This is why lunar eclipses can fall on feast days without either the feast or the eclipse being artificial. The calendar follows lunar months. The shadow requires full moon. Shared timing creates the overlap.

04What the 2014–15 claim did—and did not—say

Mark Biltz drew broad attention to the feast-day sequence before the eclipses. John Hagee's 2013 book Four Blood Moons: Something Is About to Change brought it to a much larger audience. Its promotional language asked whether the alignment carried prophetic significance for Israel and the nations and said that something large was approaching.

Fairness matters here. Hagee did not attach one named event and deadline to the final eclipse. It would therefore be inaccurate to rewrite the message as a precise prediction that one identifiable catastrophe or Christ's return had to occur on 28 September 2015. The title and campaign fostered expectation, but the forecast remained broad.

That breadth also prevents a clean success. Events happened during 2014 and 2015, as they do in every two-year period. No agreed result emerged that the claim had specified in advance and that a quiet period would have falsified. “Something changed” is always true somewhere. It cannot distinguish prophecy from an ordinary news cycle.

This is the lesson, offered without contempt for anyone who watched with sincere concern: ask what a claim predicts before the date arrives. Name the expected event, its time window and what would count against the claim. If those pieces are absent, hindsight will supply connections faster than evidence can test them.

05The next tetrad carries no automatic interpretation

NASA's catalog places the next lunar tetrad in 2032–33. Its four total eclipses will be observable from different parts of Earth, and local visibility will vary. A table can calculate the shadows long before anyone knows the headlines of those years.

That advance knowledge does not make the heavens empty of spiritual meaning. Scripture presents the lights as God's creatures and timekeepers, and Christians hold several serious views about prophetic sky language. The biblical meaning commonly assigned to a blood moon deserves to be read from its passages rather than from a red photograph alone.

It does mean a tetrad cannot set a date for Christ's return. Jesus' return is not an outcome an eclipse catalog authorizes anyone to schedule. End-times date predictions repeatedly fail when a calculable cycle is made to reveal a timetable the text withholds.

Day 4 does not track tetrads or label eclipses as signs. Its Manna deck may offer a small sign-in-the-sky card as an invitation to pay attention, never as a forecast. For local eclipse dates and visibility, use an astronomical source such as NASA rather than the app.

06Common questions