Lunar Weekend Calendar for 2021

This information is a reformatted version of DL7APV's Lunar Weekend Calendar
More detailed info can be taken from VK3UMs famous EME Planner

Loss= Apogee (loss= -1.9 dB). Loss=Perigee (loss= +0.3 dB). ATP=ActivityTimePeriod for 432 CW
                                                   Temp=High background temp. Temp=Low background temp

Please send reports to K2UYH & DUBUS

See also JJ's - F1EHN Moon conditions chart 2021

 

2400 Sat/ 0000 Sun

Decl
(deg)

Loss
(dB)

Sun offset
(deg)

Temp
432
(degK)

contest dates & meetings

Comments

Expeditions on 432 or up

Jan 02/03

+15.7

-0.9

130

20

Night

 

Jan 09/10

-21.1

-0.2

44

50

Day AM

 

Jan 16/17

-11.8

-1.3

-50

25

Day PM

 

Jan 23/24

+20.1

-1.7

-123

40

DUBUS/REF CW 13cm

ATP 13-15 & 21:30-23:30

Day PM

 

Jan 30/31

+12.1

-0.5

148

20

SSB FUNTEST
contest Sat 23cm/Sun 13cm

Night

 

Feb 06/07

-23.5

-0.4

61

120

Day AM

 

Feb 13/14

-8.6

-1.4

-30

25

Sun close

 

Feb 20/21

+21.9

-1.7

-103

40

DUBUS/REF CW 2m/70cm

Day PM

 

Feb 27/28

+8.5

-0.3

167

20

Night

 

Mar 06/07

-25.3

-0.6

76

240

Eu VHF/UHF Tropo

Day AM

 

Mar 13/14

-5.0

-1.6

-10

25

Sun close

 

Mar 20/21

+23.5

-1.7

-84

40

DUBUS/REF CW 9cm

ATP 10-12& 19:30-21:30

Day PM

 

Mar 27/28

+5.1

-0.1

-173

25

Night

 

Apr 03/04

-26.2

-0.5

92

140

Day AM

 

Apr 10/11

-1.3

-1.7

9

25

Sun noise

 

Apr 17/18

+24.5

-1.7

-66

40

DUBUS/REF CW 3cm

ATP 8:30-10:30 & 18:30-20:30

Day PM

 

Apr 24/25

+1.7

-0.0

-153

30

ARI spring contest

Night

 

May 01/02

-26.1

-0.5

109

50

Eu VHF/UHF Tropo

Day AM

 

May 08/09

+2.5

-1.8

29

30

Sun close

 

May 15/16

+24.8

-1.7

-49

35

DUBUS/REF CW 23cm

ATP 8-10 & 17-19

Day PM

SV5/HB9COG 

May 22/23

-2.0

-0.1

-133

30

Dayton (Xenia) HAMvention

Day PM

SV5/HB9COG 

May 29/30

-25.3

-0.4

127

35

Day AM

 

June 05/06

+6.3

-1.9

48

30

EU 23&up Tropo

Day AM

 

June 12/13

+24.3

-1.6

-31

30

DUBUS/REF CW 6cm

ARRL VHF Tropo

ATP 6:30-8:30 & 15:30-17:30

Day PM

 

June 19/20

-6.0

-0.3

-114

25

Day PM

 

June 26/27

-23.9

-0.3

146

30

HAM Radio

Night

 

July 03/04

+9.9

-1.9

68

30

Eu VHF/UHF Tropo

Day AM

 

July 10/11

+23.1

-1.4

-14

20

ATP 5:30-7:30 & 14:30-16:30

Sun close

 

July 17/18

-10.4

-0.4

-96

30

CQ WW VHF

ES-Tropo

Day PM

 

July 24/25

-22.0

-0.5

165

30

Night

 

Aug 00/01

+13.3

-1.8

88

35

ARRL UHF Tropo

ATP 3:30-5:30 & 23:00-1:00

Day AM

 

Aug 07/08

+21.4

-1.2

4

20

Sun noise

 

Aug 14/15

-14.8

-0.4

-79

35

Day PM

 

Aug 21/22

-19.4

-0.7

-176

25

19th EME Conference Praha

Night

 

Aug 28/29

+16.4

-1.8

108

35

Day AM

 

Sept 04/05

+19.4

-1.1

23

15

Eu VHF Tropo

Sun close

 

Sept 11/12

-18.8

-0.3

-62

40

ARRL VHF Tropo

Day PM

 

Sept 18/19

-16.3

-0.9

-158

25

Night

 

Sept 25/26

+19.2

-1.9

127

35

ARI Autumn contest

Day AM

 

Oct 02/03

+17.0

-1.0

43

20

Eu UHF Tropo

Day AM

 

Oct 09/10

-22.0

-0.1

-44

45

Day PM

 

Oct 16/17

-12.7

-1.2

-139

25

Night

 

Oct 23/24

+21.7

-1.9

147

35

ARRL 1st leg

Night

 

Oct 30/31

+14.5

-1.0

62

20

Day AM

TX7MB 

Nov 06/07

-24.2

+0.2

-27

100

Eu VHF CW Tropo

Sun close

 

Nov 13/14

-8.6

-1.3

-121

25

Day PM

 

Nov 20/21

+23.7

-2.0

165

45

ARRL 2nd leg

Night

 

Nov 27/28

+11.3

-1.1

82

20

Day AM

 

Dec 04/05

-25.6

+0.3

-8

180

Sun noise

 

Dec 11/12

-4.5

-1.3

-102

25

Day PM

 

Dec 18/19

+25.0

-1.9

-177

45

ARRL 3rd leg

Night

 

Dec 25/26

+7.4

-1.1

101

20

Xmas & HNY

Day AM

 

ATP=ActivityTimePeriod for 432MHz, see homepage of SM2CEW or EME pages send reports to K2UYH & Dubus,
432 MHz activity times should boost the 432MHz CW EME activity. See some big guns in CW within 432.010 and 432.050 MHz.

High positive Declination shows that the moon transit is in the northern hemisphere, red negative Decl indicates a southern transit of the moon.
Loss in dB indicates the extra losses due to the different distance earth-moon, best case at perigee is +0,3dB and worst case at apogee -2dB.

Sun Offset vs Time of day for Visible Moon

 -180

 -120

-30  

 0

 +30

+120

+180  
 
Night - N
Day (AM) - DA
Sun Noise - S
Day (PM) - DP
Night - N
 

The background Temperature indicates the losses caused by the noise from objects behind/near the moon.
Coldest value on 432 is 15K and when the moon is in front of our galactical centre this value can be up to 200K.
This can cause up to 8dB extra losses on RX at a good station.

Year

2016

2017

2018

2019

2020

2021

2022

2023

2024 2025 2026 2027

max declination(deg)

17

18

19

22

23

25

27

28

28 28 27 25

declination at perigee (deg)

+14

+18

+19

+18

+5

-25

-27

-25

+7 +28 +26 +22

The maximum declination increases until 2024/25.      Perigee and high positive declination are out of phase 2021 till 2023

 

See -  http://www.F1EHN.org

 

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