TLP Repeat Illumination/Libration and Earthshine predictions for: Latvia - Riga

Ill is percentage illumination of the Moon
*Indicates a repeat illumination and libration event to within +/- 1 deg for both
A non-* indicates just repeat illumination to within +/-0.5 deg

2020-Jul-01 UT 19:11-19:43 Ill=86% Gassendi observed by Sartory on 1966-5-30 *

     Gassendi 1966 May 30 UT 20:32-20:59 Observed by Sartory (England, 8.5" 
     reflector + filters) "Orange patch & obscuration -- detected by Eng. 
     moon blink system. Color seen visually."NASA catalog weight=4 (good). 
     NASA catalog ID #941.

2020-Jul-01 UT 20:28-22:39 Ill=86% Plato observed by Marshall_KP on 1982-8-1 *

     On 1982 Aug 01 at 00:00-01:00 K. Marshall (Medellin, Columbia, 12" 
     reflector, seeing I-II) noted shading on the east floor of Plato that 
     was apparently lighter than the rest of the floor and this was seen at 
     both low and high magnifications. Foley notes that this was unusual. 
     There were three craterlets visible on the floor - the central one was 
     the brightest. Cameron 1978 catalog ID=178 and weight=3. ALPO/BAA 

2020-Jul-03 UT 19:30-23:20 Ill=98% Aristarchus observed by Moore_P on 1995-11-5 *

     Colour seen between Aristarchus and Herodotus by P. Moore
     and G. North. ALPO/BAA weight=3.

2020-Jul-03 UT 22:21-23:20 Ill=98% Lichtenberg observed by Schneller on 1966-6-2 *

     Lichtenberg 1966 Jun 02 UTC 03:05-03:35 Observed by Schneller 
     (Cleveland, Ohio, 8" reflector, slit spectrascope) "Red glow on W. wall 
     (Schnller thinks this is "normal" reddening at SR; however, these vary 
     according to Ricker), (This rep't is the only positive one from alert 
     sent out to observe for J.Green's tidal predictions, See list of neg. 
     obs.)" NASA catalog weight=3 (average). NASA catalog ID #944

2020-Jul-04 UT 20:23-22:44 Ill=100% Aristarchus observed by Gordon on 1966-6-3 *

     Aristarchus 1966 Jun 03 UT 01:00-01:45 Observed by Gordon (2), Delano 
     (Ackerman, PR?, 5" reflector / Massachussets, 3" (x92) & 10" reflector 
     T=4) "Deep blue color on N. wall. S.part of crater was brownish, (not 
     on alert). Delano saw E.wall bright spot unusually bright, confirm, ?" 
     NASA catalog weight=5. NASA catalog ID #947. ALPO/BAA weight=3.

2020-Jul-06 UT 21:41-22:48 Ill=97% Aristarchus observed by Foley_PW on 1975-3-28 *

     On 1975 Mar 28 at UT22:30-23:42 P.W. Foley (Kent, UK) observed 
     orange/red in Aristarchus. The ALPO/BAA weight=1.

2020-Jul-06 UT 21:41-22:18 Ill=97% Plato observed by Foley_PW on 1975-3-28 *

     On 1975 Mar 27 at UT22:30-01:45 P.W. Foley (Wilmington, Dartford, Kent, 
     UK, 30cm Newtownian) observed blueness along the inner southern wall of 
     Plato. This is a BAA report. The ALPO/BAA weight=1.

2020-Jul-09 UT 22:45-01:41 Ill=77% Proclus observed by Louderback_D on 1980-8-30 *

     On 1980 Aug 30? at UT 08:00? D. Louderback (South bend, WA, USA, 8" 
     refletor x140) found the north wall to be very bright in red light 
     (this is not normal as it is usually bright in blue - according to 
     Cameron). The brightness was 9.7 (red) and 9 (blue no filter)compared 
     to Eimmart's 8.7. Louderback thought that they observed an oranfe-
     yellow tinge. Cameron 2006 catalog ID=108 and weight=3.

2020-Jul-12 UT 00:37-01:23 Ill=59% Aristarchus observed by Hall on 1965-11-15

     Aristarchus 1965 Nov 15 UTC 05:55-10:00 Observed by Hall, Johnson, 
     Nordling (Pt. Tobacco, MD, USA, 16" reflector x400), Genatt (Greenbelt, 
     MD, USA, 6" refractor, x50 & 20" reflector x400), Wagmann (Pittsburgh, 
     PA, 30" refractor). "Color on c.p. detected with Trident MB, not seen 
     vis. at Port Tobacco. Network alerted & 6 responded. 4 did not see 
     anything unusual; 2 others did & saw red on c.p. in 6-in refr.. but not 
     in 20-in refl. at 400x; other saw indistinctness. Port Tobacco obs. 
     took 5 rolls of film in blue & red & neutral. Phenom. not detectable on 
     them, but focus was poor. Blue image had most detail, whereas would 
     expect red or neutral to. Phenom. still present at dawn in Moon Blink 
     device." NASA catalog weight=5. NASA catalog ID #914.
     ALPO/BAA weight=4.

2020-Jul-12 UT 00:53-01:56 Ill=59% Plato observed by Mobberley_M on 1982-8-11

     On 1982 Aug 11 at UT03:30-04:15 Mobberley (Suffolk, UK) obtained a 
     photograph and made a sketch that revealed a needle-like shadow from 
     the west wall to near by the central craterlet - the latter was quite 
     clearly visible. What were not visible were the other four craterlets. 
     The Cameron 2006 catalog ID=183 and weight=4. The ALPO/BAA weight=2.

2020-Jul-12 UT 01:03-01:56 Ill=59% Alphonsus observed by Kozyrev on 1958-11-3

     Alphonsus 1958 Nov 03 UT 02:30-03:30 Observed by Kozyrev, 
     Ezerski (Pulkova Observatory, Crimea, Ukraine, 50" reflector, 
     23A/mm spectrograph) UT03:00-03:30 "C.p. redder than rest; 
     emiss. spect. in 4756A, 4100, 3950A (C3), 5165, 5130A (Swann 
     bands) 3 spect. over 3.5 h. Image of c.p. weakened in viol. 
     light on spect. Noted visual decrease in brightness & reddish 
     glow. Decrease in bright, & unnusual white color(at 0300h-
     0330h). Sudden decrease in vis. bright. Spect. started -- 
     gave norm. Spect. (0330-0340h), conditions almost identical to 
     Alter's on Oct. 26, 1956. Nothing seen on Nov. 2-3" NASA catalog 
     weight=5. NASA catalog ID #703. ALPO/BAA weight=5.

2020-Jul-13 UT 00:39-00:50 Ill=50% Earthshine: sporadic meteors

2020-Jul-14 UT 00:47-00:00 Ill=40% Plato observed by Williams_AS on 1882-4-11

     On 1882 Apr 11 at UT 21:00 Williams (England, 6.5" reflector) observed 
     Plato at sunset (date Cameron gives is calculated from #229) and saw a 
     curious phosphorescent glimmer in the crater where he had seen a 
     luminous milky appearance before. at sunrise. The cameron 1978 catalog 
     ID=230 and weight=3. The ALPO/BAA weight=3.

2020-Jul-14 UT 00:47-00:52 Ill=40% Earthshine: sporadic meteors

2020-Jul-16 UT 01:21-01:54 Ill=22% Mare_Crisium observed by Arsyukhin on 1982-11-11

     On 1982 Nov 11 at UT 17:00-17:30 E.V. Arsyukhin (Moscow, Russia, 3" 
     reflector) saw three stationary dark spots suddenly appear in Mare 
     Crisium. There was one on the north and the other two in the south west 
     to south. They lasted approximately 30 minutes and then promptly 
     vanished. Cameron says that it cannot be this date because the Moon was 
     not visible at 17:00UT Suggests 05:00-05:30UT? The Cameron 2006 catalog 
     ID ID=189 and weight=3. The ALPO/BAA weight=2.  

2020-Jul-23 UT 18:45-19:44 Ill=12% Aristarchus observed by Cross on 1969-5-20 *

     On 1969 May 20 at UT 03:18-04:27 Cross (Las Cruces, NM, USA 6" 
     refractor), Olivarez (Spain?), Kohlenberger, Gibson, Miller, Duarte and 
     Harris (CA, USA) observed brightenings, pulsations, scintillations in 
     Aristarchus crater. Cameron says independent confirmation seen by 4 
     observers, 1-2 magnitude increases, ranged between 1-30sec. Most active 
     period was 03:18-03:20UT, 04:17-04:27UT (Las Cruces). Calkins (West 
     Covins, CA, USA) UT 03:40-04:25 saw one major brightening up 2 
     magnitudes above steady state lasting 0.2 to 1.5 sec and another slow 
     brightening lasting 5-10 seconds. Kelsey (CA, USA) saw at 03:43-03:48UT 
     some brightenings. These observations were made during the Apollo 10 
     watch. The Cameron 1978 catalog ID=1127 and 1128 and weight=5. The 
     ALPO/BAA weight=4.

2020-Jul-27 UT 18:38-19:34 Ill=53% Mons_Piton observed by Cutts on 1970-4-13 *

     Piton 1970 Apr 13 UT 22:06-01:30 Observed by Cutts (Waverton, 
     UK) "Peak was bright (Apollo 13 watch. Shining in dark?)" 
     NASA catalog weight=1. NASA catalog ID #1247. Similar 
     illumination shown on Hatfield Plate 2E(left). 
     ALPO/BAA weight=1.

2020-Jul-29 UT 18:34-20:47 Ill=75% Plato observed by Robinson_JH on 1966-6-27 *

     Plato 1966 Jun 27 UT 21:40-21:55  Observed by Robinson (Teignmouth, 
     England, 10.5" reflector) and Sartory (England, 8.5" reflector + Moon 
     blink) "Color (red?) on SE wall detected by Eng. moon blink sys. 
     (confirm)." NASA catalog weight=5 (very high). NASA catalog ID 949.

2020-Jul-31 UT 18:43-21:45 Ill=91% Plato observed by Foley_PW on 1983-7-21 *

     On 1983 Jul 21 at UT 21:02-23:18 P.W. Foley (Kent, UK, 12" reflector, 
     seeing=III) found the region around the cleft on the souther rim to be 
     out of focus - however atmospheric conditions were turbulent until 
     23:18UT. An unsual dark triangular region (long base against rim) was 
     seen to extend from the inner rim at 12 o'clock onto the floor for 13-
     16km. The crater had lots of detail elsewhere. M. Cook (Frimley, UK) 
     found the south east to soth west to be obscured again, but not as 
     badly as she had seen on the 20th July. J. Cook (Frimley, UK) found the 
     dark region had 2 white bands on the side and the south west wall was 
     blurred like it was on the 20th July - this time tough colour was not 
     present. There were also two light patches on the floor. Mosely 
     (Coventry, UK) observed the south wall at x120 and found the wall out 
     of focus at the 11 o'clock location. Through a yellow filter he saw a 
     "white mistiness: on the top of the southern rim and only the south 
     east cleft could be seen (no colour). By 22:40-23:00 the effect had 
     cleared up. No dark triangular patch was seen. When Marshall (Surrey, 
     UK) observed (22:30-03:00) nothing unsual was seen, though a sketch 
     provided shows a light patch on the floor located at 11 o'clock. All 
     observations, made by all observers had some atmospheric turbulence, 
     however trsnparency was good. The Cameron 2006 catalog ID=225 and the 
     weight=5. The ALPO/BAA weight=3.