Predictions are counted for observers located in central Europe (Czech republic): 50° north and 15° east.

Neglection rating:
1 = many observations in last 10 years, 10 = no CCD minimum in last 10 years. More information about rating.
RECOMMENDATION FOR OBSERVERS OBJECTS WITH RATING 5 AND MORE SHOULD BE OBSERVED

Astrophysical interestingness:

There are many systems, which exhibits period changes in O-C diagrams. We have highlighted them among others using small color signs (see the list bellow). Explanations of used colors is given in the picture and appears when your mous move over the sign as well.
The astrophysical interestingness has prepared L. Smelcer, 2009 according to O-C gateway. Updated by P. Zasche (2011).

STAR	P/S BODY		UT	H/A	MAG RANGE	D(h)	ELEMENTS
CzeV323 Cyg	S	-	0:1	45° / W	12.5-12.5 (C)	EW	55832.7365+0.429145*E
CzeV1503 Cas	P	-	0:3	78° / N	14.5-14.62 (V)	0.1	58487.52856+0.757672*E
KIC 98322 Cyg	S	-	0:38	29° / NW	12.27-12.27 (0.19)	EW	55688.73+0.4579485*E
CzeV1574 Gem	P	-	0:48	22° / E	16.32-16.66 (V)	0.1	58513.58384+0.236793*E
CzeV267 And	S	-	1:3	84° / SW	15.8-16.3 (C)	EW	55808.45184+0.2954*E
CzeV714 Cep	S	-	1:10	57° / NW	10.57-10.57 (C)	1	51322.849+3.79464*E
SvkV23 Lac	P	-	1:19	46° / W	12.25-12.60 (C)	EW	54387.7261+0.3499823*E
bet Per	P	-	1:31	81° / S	2.12-3.39 (V)	EA	45641.5135+2.8673043*E
SvkV098 Aur	P	-	1:49	73° / E	12.11-12.39 (V)	1	57646.36457+0.4309828*E
CzeV1570 Ori	S	-	2:8	50° / SE	12.99-13.12 (V)	0.1	58519.5375465+0.345053*E
CzeV622 Per	P	-	2:15	78° / NW	13.2-13.85 (V)	3	54417.9408+2.894365*E
SvkV67 Cep	P	-	2:32	50° / NW	13.66-14.26 (V)	EW	57518.37698+0.3352*E
V1094 Cas	S	-	2:33	65° / NW	12.19-12.53 (Rc)	EB	54683.42245+0.5142909*E
TYC 3807- UMa	P	-	2:38	44° / NE	9.5-9.7 (V)	1	56267.92908+0.2277135*E
CzeV177 Gem	P	-	2:49	43° / SE	12.8-13.1 (C)	EW	55155.52868+0.359857*E
CzeV252 UMi	P	-	3:2	46° / N	14.9-15.2 (C)	EW	55689.411015+0.29518*E
CzeV1568 Ori	P	-	3:19	59° / SE	13.7-13.82 (V)	0.1	58515.31494+0.924611*E
CzeV1566 Ori	P	-	3:23	58° / SE	14.77-15.28 (V)	0.1	58116.8795+0.348075*E
CzeV1502 Cas	S	-	3:44	54° / NW	13.63-13.74 (V)	0.1	58487.6767235+0.452827*E
CzeV1559 Gem	P	-	3:46	48° / SE	14.3-14.62 (V)	0.1	58413.50616+0.3559661*E
V0538 Peg	S	-	18:35	56° / E	12.54-12.64 (V)	1	57943.18+0.888628*E
CzeV623 And	S	-	18:57	31° / E	12,33-12,47 (clear)	EW	54333+0.466395*E
KIC 98322 Cyg	P	-	19:6	78° / W	12.27-12.46 (0.19)	EW	55688.49913+0.4579485*E
V1094 Cas	P	-	20:22	61° / NE	12.19-12.66 (Rc)	EB	54543.792+0.5142909*E
SvkV098 Aur	S	-	20:42	31° / NE	12.11-12.39 (V)	1	58787.39349+0.4309828*E
HD 213597 Aqr	P	-	20:45	42° / S	7.790-7.815 (V)	4.7	55799.3292+2.4238*E
CzeV134 Cas	P	-	21:0	22° / N	11.45-11.63 (Rc)	RRc	53236.50412+0.419794*E
SvkV23 Lac	S	-	21:7	77° / S	12.25-12.50 (C)	EW	54387.55111+0.3499823*E
CzeV132 Lac	P	-	21:29	83° / SW	15.6-16.3 (C)	EW	54337.43655+0.33658*E
SvkV 20 And	P	-	21:32	74° / E	11.5-11.8 (V)	EA	55482.323+1.1854*E
CzeV267 And	P	-	21:33	62° / E	15.8-16.5 (C)	EW	55807.42028+0.2954*E
CzeV623 And	P	-	21:38	57° / E	12,33-12,48 (clear)	EW	54333.578+0.466395*E
CzeV270 Cyg	P	-	21:39	67° / SW	10.6-10.9 (C)	2.9	54298.2205+1.87792*E
CzeV271 Aur	P	-	22:9	21° / NE	14.9-16.1 (Clear)	3.8	55831.5888+0.88712*E
CzeV1502 Cas	P	-	22:18	76° / NE	13.63-13.79 (V)	0.1	58487.45031+0.452827*E
SvkV67 Cep	S	-	22:32	67° / N	13.66-14.16 (V)	EW	57518.54553+0.3352*E
CzeV266 And	P	-	22:42	73° / E	14.9-15.3 (Clear)	EA	51999.818+1.0077*E
CzeV261 Cyg	P	-	22:52	33° / W	13.28-13.64 (C)	EW	55732.40643+0.335595*E
CzeV265 And	P	-	22:58	76° / E	15.9-16.4 (C)	EW	55796.55235+0.3647*E
CzeV1566 Ori	S	-	23:12	24° / E	14.77-15.28 (V)	0.1	58117.05353+0.348075*E
CzeV268 Per	P	-	23:28	67° / E	14.4-15.3 (Clear)	EW	55808.2512+0.38818*E
CzeV208 Cam	S	-	23:44	67° / NE	12.2-24.2 (R)	EB	55650.318182+0.41125*E
TYC 3807- UMa	S	-	23:54	26° / NE	9.5-9.7 (V)	1	56268.04293675+0.2277135*E
CzeV323 Cyg	P	-	23:59	45° / W	12.5-12.8 (C)	EW	57624.41516+0.429145*E

Minima predictions for E15°, N50° (central Europe)