Expected New Moons and Appointed Times for 2024

Listed below are the computations for 2024 for the expected dates of New Moon visibility from Israel. The possible projected dates for the Appointed Times for 2024 are given in a second table below the New Moons table.

PLEASE NOTE: The "Date of Visibility" column dates are the dates on which the New Moon is expected to be seen--beginning at sunset of the listed day. All dates listed are to be reckoned from sunset of listed day and date through the next day at sunset in the following New Moon table.

**2024/2025 New Moon Data**
New Moon	Date of Visibility	Sunset	Moon Set	Lag Time	% of Illum.	Moon Alt.	Sun Alt.	VN	Sighted?
11th	Friday, January 12, 2024	4:55	5:58	63 min.	1.98%	10.2	-12.5	138.5	1/12/24
12th	Sunday, February 11, 2024	5:22	7:12	110 min.	4.33 %	20.7	-23.2	268.6
1st	Monday, March 11, 2024	5:44	7:08	84 min.	2.51 %	10.9	-12.2	125.3
2nd	Tuesday, April 9, 2024	7:04	8:03	59 min.	1.23 %	10.9	-12.2	125.3
3rd	Thursday, May 9, 2024	7:25	9:13	108 min.	3.34 %	19.1	-19.8	236.5
4th	Friday, June 7, 2024	7:43	9:04	81 min.	1.87 %	13.6	-14.1	162.9
5th	Sunday, July 7, 2024*	7:48	9:19	91 min.	3.42 %	16.6	-15.8	208.0
6th	Monday, August 5, 2024	7:32	8:24	52 min.	1.55 %	9.54	-10.0	115.6
7th	Wednesday, September 4, 2023	6:59	7:44	45 min.	2.28 %	8.6	-9.51	118.5
8th	Friday, October 4, 2024	6:20	7:03	43 min.	3.09 %	7.78	-9.37	127.1
9th	Sunday, November 3, 2024	4:47	5:46	59 min.	4.18 %	9.28	-12.1	166.6
10th	Monday, December 2, 2024 *	4:35	5:18	43 min.	2.02 %	6.43	-8.43	103.0
11th	Wednesday, January 1, 2025	4:46	6:14	88 min.	3.39 %	14.2	-17.5	202.8
12th	Thursday, January 30, 2025	5:12	6:15	63 min.	1.65 %	11.2	-13.0	137.9
13th	Sunday, March 1, 2025	5:37	7:21	104 min.	3.75 %	20.2	-22.1	251.1

* Sunday, July 7, 2024 - The moon may possibly be visible one evening earlier, but most likely not. Here are the stats for that date: On Saturday evening, July 6, 2024, we expect a 7:48 pm sunset & 7:37 pm moon set (therefore, a lag time of 49 minutes), 0.80 % of illumination, with a lunar altitude at sunset of 8.18 degrees and a solar altitude of -8.9 at moonset. VN = 94.18

* Monday, December 2, 2024 - The moon may possibly not be visible one evening later, but most likely not. Here are the stats for that date: On Tuesday evening, December 3, 2024, we expect a 4:35 pm sunset & 6:15 pm moon set (therefore, a lag time of 100 minutes), 5.81 % of illumination, with a lunar altitude at sunset of 15.0 degrees and a solar altitude of -20.2 at moonset. VN = 259.0

**2024 Appointed Times (March 11th/12th New Year)**
Event	begins sunset of	ends sunset of
Passover (Lord's Supper) - Aviv 14	Sunday, March 24	Monday, March 25
Feast of Unleavens (1st day) - Aviv 15	Monday, March 25	Tuesday, March 26
Elevation Sheaf Day (aka "wave sheaf")	Saturday, March 30	Sunday, March 31
Feast of Unleavens (7th day) - Aviv 21	Sunday, March 31	Monday, April 1
Pentecost	Saturday, May 18	Sunday, May 19
Day of Shouting (aka "Trumpets")	Wednesday, September 4	Thursday, September 5
Day of Atonement	Friday, September 13	Saturday, September 14
Feast of Tabernacles (1st day)	Wednesday, September 18	Thursday, September 19
8th Day Assembly	Wednesday, September 25	Thursday, September 26

Understanding the Calculations

Visibility Number (VN) is the difference between the sun and moon setting times plus 27 times the illuminated percent of the moon plus 5.5 times the altitude of the moon at sunset minus 5 times the altitude of the sun at moonset, all divided by 1.7.

If the VN is:

* less than 88 then the New Moon will not be seen
* between 88 and 100, it will probably not be seen
* between 100 and 112, it will probably be seen
* anything greater than 112, it will be seen in reasonable conditions.

EXAMPLE: The sun will set in Jerusalem at 6:37. The moon will set at 7:36. This is a 59 minute lag time (lag time = the time between sunset and moonset) -- plenty of time for the sky to darken enough after sunset for the moon to be sighted. 2.39% of the lunar surface will be illuminated. And the moon's altitude at sunset will be 11.4 degrees. The sun's altitude at moonset will be -12.6 degrees.

So using the calculations, we have 59 [lag time] + (27 x 2.39 = 64.53) [27 times illuminated percent] + (5.5 x 11.4 = 62.7) [5.5 times lunar altitude] - (5 x -12.6 = -63) [5 times sun's altitude] divided by 1.7 = 146.6

As seen above, anything over 112 should be visible (the higher the number, the greater the visibility), and we have a VN of 146.6 -- hence, New Moon!

Email: Brian Hoeck

©2024 Truth On The Web Ministries: All the articles originated by Kenneth Hoeck and/or Brian Hoeck may be freely distributed or mirrored as long as presented in their entirety (including this statement), attributed to Truth on The Web, and proper author credit given.

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