Expected New Moons and Appointed Times for 2022

Listed below are the computations for 2022 for the expected dates of New Moon visibility from Israel. The possible projected dates for the Appointed Times for 2022 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.

**2022/2023 New Moon Data**
New Moon	Date of Visibility	Sunset	Moon Set	Lag Time	% of Illum.	Moon Alt.	Sun Alt.	VN	Sighted?
11th	Tuesday, January 4, 2022*	4:48	6:42	114 min.	5.12 %	18.4	-22.8	275.0	1/4/22
12th	Wednesday, February 2, 2022	5:14	6:37	83 min.	2.85 %	14.7	-17.2	192.3
13th	Thursday, March 3, 2022*	5:38	6:27	49 min.	1.20 %	9.02	-10.5	107.9
1st	Saturday, April 2, 2022	5:59	7:14	75 min.	2.15 %	14.3	-15.5	170.2
2nd	Monday, May 2, 2022	7:20	8:59	99 min.	3.22 %	18.2	-18.8	223.8
3rd	Tuesday, May 31, 2022	7:39	8:46	67 min.	1.41 %	11.3	-12.0	133.7
4th	Thursday, June 30, 2022	7:49	9:11	82 min.	2.43 %	14.5	-14.3	175.8
5th	Friday, July 29, 2022*	7:38	8:28	63 min.	1.04 %	8.9	-9.57	102.9
6th	Sunday, August 28, 2022	7:08	8:03	55 min.	1.92 %	10.5	-11.3	129.9
7th	Wednesday, September 27, 2022	6:29	7:30	61 min.	3.41 %	11.5	-13.0	165.5
8th	Thursday, October 27, 2022*	5:54	7:17	83 min.	5.98 %	13.9	-17.5	240.1
9th	Friday, November 25, 2022	4:36	5:51	75 min.	3.93 %	11.6	-15.1	188.4
10th	Saturday, December 24, 2022	4:41	5:43	62 min.	2.29 %	9.66	-12.2	139.9
11th	Monday, January 23, 2023	5:05	7:00	115 min.	4.89 %	20.0	-23.6	279.2
12th	Tuesday, February 21, 2023	5:30	6:55	85 min.	2.80 %	16.0	-18.0	199.0
1st	Wednesday, March 23, 2023	5:52	6:46	54 min.	1.23 %	10.3	-11.7	119.0

* Tuesday, January 4, 2022 - The moon may possibly be visible one evening earlier, but most likely not. Here are the stats for that date: On Monday evening, January 3, 2022, we expect a 4:48 pm sunset & 5:30 pm moon set (therefore, a lag time of 42 minutes), 1.20 % of illumination, with a lunar altitude at sunset of 6.67 degrees and a solar altitude of -8.32 at moonset. VN = 89.82

* Thursday, March 3, 2022 - The moon may possibly not be visible until one evening later. Here are the stats for that date: On Friday evening, March 4, 2022, we expect a 5:39 pm sunset & 7:29 pm moon set (therefore, a lag time of 110 minutes), 4.51 % of illumination, with a lunar altitude at sunset of 21.4 degrees and a solar altitude of -23.4 at moonset. VN = 274.2

* Friday, July 29, 2022 - The moon may possibly not be visible until one evening later. Here are the stats for that date: On Saturday evening, July 30, 2022, we expect a 7:37 pm sunset & 9:02 pm moon set (therefore, a lag time of 85 minutes), 3.75 % of illumination, with a lunar altitude at sunset of 16.1 degrees and a solar altitude of -15.6 at moonset. VN = 207.6

* Thursday, October 27, 2022 - The moon may possibly be visible one evening earlier, but most likely not. Here are the stats for that date: On Wednesday evening, October 26, 2022, we expect a 5:55 pm sunset & 6:36 pm moon set (therefore, a lag time of 41 minutes), 1.73 % of illumination, with a lunar altitude at sunset of 7.08 degrees and a solar altitude of -8.60 at moonset. VN = 99.79

**2022 Appointed Times (April 3rd/4th New Year)**
Event	begins sunset of	ends sunset of
Passover (Lord's Supper) - Aviv 14	Saturday, April 16	Sunday, April 17
Feast of Unleavens (1st day) - Aviv 15	Sunday, April 17	Monday, April 18
Elevation Sheaf Day (aka "wave sheaf")	Saturday, April 23	Sunday, April 24
Feast of Unleavens (7th day) - Aviv 21	Saturday, April 23	Sunday, April 24
Pentecost	Saturday, June 4	Sunday, June 12
Day of Shouting (aka "Trumpets")	Tuesday, September 27	Wednesday, September 28
Day of Atonement	Thursday, October 6	Friday, October 7
Feast of Tabernacles (1st day)	Tuesday, October 11	Wednesday, October 12
8th Day Assembly	Tuesday, October 18	Wednesday, October 19

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

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