EA6VQ's 144 MHz EME calendar 2025-2026

You could also be interested in the on-line EME calculator, the DX news and the 50 MHz EME calendar

 EA6VQ's EME WEEKEND CALENDAR - 2025    EA6VQ's EME BEST DAYS - 2025 (DGRD < 2.5 dB)

Weekend
 2025

 CONDITIONS on 144 MHz
Nov    01-02 Good
08-09 Moderate
15-16 Moderate -> Poor
22-23 Very poor
29-30 Good

Dec   06-07

 Moderate -> Good

13-14

 Moderate -> Poor

20-21

 Very poor and New Moon on the 20th

27-28

 Good
        

Days

 CONDITIONS on 144 MHz
Nov 10-14 Best DGRD = 1.2 dB on 11th
Nov 28-Dec 2 Best DGRD = 1.8 dB on 29th
Dec 7-11 Best DGRD = 0.8 dB on 8th Best conditions in 2025
Dec 26-29 Best DGRD = 2.2dB on 26th-27th


 

 EA6VQ's EME WEEKEND CALENDAR - 2026    EA6VQ's EME BEST DAYS - 2026 (DGRD < 2.5 dB)

Weekend
 2026

 CONDITIONS on 144 MHz

Jan    03-04

 Moderate -> Very good

10-11

 Moderate -> Poor

17-18

 Very poor and New Moon on the 18th
24-25 Good -> Moderate
31-01 Moderate -> Excellent

Feb     07-08

 Moderate -> Poor

14-15

 Very poor -> Poor

21-22

 Moderate

28-01

 Good -> Very good

Mar    07-09

 Moderate -> Poor

14-15

 Very poor -> Moderate

21-22

 Good -> Moderate

28-29

 Very good

Apr     04-05

 Poor -> Very poor

11-12

 Poor -> Moderate

18-19

 Moderate

25-26

 Very good -> Good
May    02-03 Poor -> Very poor

09-10

 Moderate

16-17

 Moderate but New Moon

23-24

 Very good -> Good

30-31

 Poor -> Very poor

Jun    06-07

 Poor -> Moderate

13-14

 Moderate

20-21

 Good -> Moderate

27-28

 Very poor
Jul    04-05 Moderate
11-12 Moderate
18-19 Good -> Moderate
25-26 Very poor

Aug    01-02

 Moderate

08-09

 Moderate

15-16

 Good -> Moderate

22-23

 Very poor

29-30

 Moderate
Sep    05-06 Poor -> Moderate
12-13 Moderate
19-20 Very poor
26-27 Good -> Moderate

Oct    03-04

 Moderate -> Good

10-11

 Moderate but New Moon

17-18

 Very poor -> Poor

24-25

 Good

31-01

 Moderate -> Very good
Nov    07-08 Moderate -> Poor
14-15 Very poor -> Poor
21-22 Good -> Moderate
28-29 Good -> Excellent

Dec   05-06

 Moderate -> Poor

12-13

 Poor

19-20

 Moderate

26-27

 Excellent
        

Days

 CONDITIONS on 144 MHz
Jan 3-8 Best DGRD = 0.8 dB on 5th
Jan 22-24 Best DGRD = 2.2 dB on 23rd
Jan 31- Feb 4 Best DGRD = 0.7 dB on 1st
Feb 18-20 Best DGRD = 2.0 dB on 19th
Feb 27- Mar 4 Best DGRD = 0.9 dB on 1st
Mar 17-21 Best DGRD = 1.9 dB on 19th  BUT New Moon on 18-19th
Mar 27-31 Best DGRD = 1.1 dB on 28th
Apr 14-17 Best DGRD = 1.8 dB on 15th  BUT New Moon on 17th
Apr 23-27 Best DGRD = 1.0 dB on 24th
May 11-15 Best DGRD = 2.0 dB on 13th
May 20-24 Best DGRD = 0.8 dB on 21st
Jun 9-11 Best DGRD = 2.2 dB on 11th
Jun 16-20 Best DGRD = 0.5 dB on 18th
Jul 14-18 Best DGRD = 0.4 dB on 15th
Aug 11-15 Best DGRD = 0.5 dB on 12th  BUT New Moon on 12-13th
Aug 29-30 Best DGRD = 2.3 dB on 30th
Sep 7-11 Best DGRD = 0.6 dB on 8th   BUT New Moon on 10-11th
Sep 25-27 Best DGRD = 2.3 dB on 26th
Oct 4-8 Best DGRD = 0.9dB on 6th
Oct 22-25 Best DGRD = 2.2 dB on 24th
Nov 1-5 Best DGRD = 0.8 dB on 2nd
Nov 19-21 Best DGRD = 2.3 dB on 20th
Nov 27-Dec 2 Best DGRD = 0.6 dB on 29th
Dec 24-29 Best DGRD = 0.3 dB on 26th Best conditions in 2026

The best EME conditions occur when:

  1. The Earth-Moon distance is at the absolute minimum and
  2. The Moon is in the coldest sky region (less background noise) along the moon path.

The effect of distance is independent of frequency, but sky temperature decreases with frequency, up to ~1 GHz and then levels out. The EME signal-to-noise ratio, in dB, is DGRDaded, from the minimum, by a factor (DGRD, see below), which varies over hourly, daily, weekly, monthly and yearly time periods. As a guide for the basic weekend EME conditions the present calendar lists the expected conditions based on the DGRDadation (DGRD) value. Factors such as local noise, antenna beam width, side lobes, polarization, etc. can also affect the s/n ratio of moon bounce signals.

Conditions:

Summary of EME conditions as controlled by DGRD at 144 MHz and New Moon. Conditions may be worse, due to ionospheric disturbance, local noise and polarity, but not better than indicated.

In general, 144 MHz DGRD:

Within a day of New Moon (NM), high sun noise can make conditions very bad regardless of the DGRD.

When two different conditions are indicated for the same weekend, it means that they change from the value indicated on the left at Saturday's moonrise to the value indicated on the right at Sunday's moonset.  For instance:

Dec   07-08

 Moderate -> Poor

means that on Dec, 7th Moonrise conditions are Moderate and get worse until Dec, 8th Moonset when they are Poor.
 
 
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