[Moon applet]

The mean deviation of the New Moon and Full Moon times for 2004 and 2005 compared
to the times by USNO is less than 2 minutes:

US Naval Observatory, Astronomical Applications Department


2004
NASA
UT
USNO
UT
Applet
UT
d =
Applet-USNO

Full

Jan 7
15:41
15 40
15 42
+2

New

Jan 21
21:07
21 05
21 04
-1

Full

Feb 6
08:49
08 47
08 48
+1

New

Feb 20
09:20
09 18
09 18
0

Full

Mar 6
23:16
23 14
23 16
+2

New

Mar 20
22:43
22 41
22 42
+1

Full

Apr 5
11:04
11 03
11 05
+2

New

Apr 19
13:23
13 21
13 22
+1

Full

May 4
20:34
20 33
20 34
+1

New

May 19
04:53
04 52
04 55
+3

Full

Jun 3
04:20
04 20
04 18
-2

New

Jun 17
20:28
20 27
20 31
+4

Full

Jul 2
11:09
11 09
11 07
-2

New

Jul 17
11:24
11 24
11 26
+2

Full

Jul 31
18:05
18 05
18 05
0

New

Aug 16
01:23
01 24
01 24
0

Full

Aug 30
02:21
02 22
02 23
+1

New

Sep 14
14:28
14 29
14 30
+1

Full

Sep 28
13:08
13 09
13 09
0

New

Oct 14
02:47
02 48
02 50
+2

Full

Oct 28
03:06
03 07
03 09
+2

New

Nov 12
14:25
14 27
14 28
+1

Full

Nov 26
20:07
20 07
20 12
+5

New

Dec 12
01:28
01 29
01 29
0

Full

Dec 26
15:06
15 06
15 11
+5






|d|=1.64 min


2005
NASA
UT
USNO
UT
Applet
d =
Applet-USNO

New

Jan 10
12:03
12 03
12 02
-1

Full

Jan 25
10:32
10 32
10 31
-1

New

Feb 8
22:29
22 28
22 29
+1

Full

Feb 24
04:54
04 54
04 52
-2

New

Mar 10
09:12
09 10
09 11
+1

Full

Mar 25
21:00
20 58
21 00
+2

New

Apr 8
20:34
20 32
20 32
0

Full

Apr 24
10:08
10 06
10 10
+4

New

May 8
08:48
08 45
08 46
+1

Full

May 23
20:20
20 18
20 20
+2

New

Jun 6
21:57
21 55
21 57
+2

Full

Jun 22
04:15
04 14
04 15
+1

New

Jul 6
12:04
12 02
10 04
+2

Full

Jul 21
11:01
11 00
11 03
+3

New

Aug 5
03:05
03 05
03 03
-2

Full

Aug 19
17:54
17 53
17 58
+5

New

Sep 3
18:45
18 45
18 43
-2

Full

Sep 18
02:00
02 01
02 04
+3

New

Oct 3
10:27
10 28
10 28
0

Full

Oct 17
12:13
12 14
12 15
+1

New

Nov 2
01:23
01 24
01 26
+2

Full

Nov 16
00:56
00 57
00 58
+1

New

Dec 1
14:59
15 01
15 02
+1

Full

Dec 15
16:14
16 15
16 18
+3

New

Dec 31
03:11
03 12
03 13
+1






|d|=1.76 min