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
CzeV623 And	P	-	0:7	70° / SE	12,33-12,48 (clear)	EW	54333.578+0.466395*E
CzeV1568 Ori	P	-	0:12	24° / E	13.7-13.82 (V)	0.1	58515.31494+0.924611*E
KIC 98322 Cyg	P	-	0:18	39° / NW	12.27-12.46 (0.19)	EW	55688.49913+0.4579485*E
CzeV323 Cyg	P	-	0:22	51° / W	12.5-12.8 (C)	EW	57624.41516+0.429145*E
CzeV323 Cyg	S	-	0:25	51° / W	12.5-12.5 (C)	EW	55832.7365+0.429145*E
CzeV1565 Ori	P	-	0:39	29° / E	13.65-14.04 (V)	0.1	58515.30576+0.550467*E
bet Per	P	-	0:53	71° / E	2.12-3.39 (V)	EA	45641.5135+2.8673043*E
CzeV1502 Cas	S	-	1:17	78° / NW	13.63-13.74 (V)	0.1	58487.6767235+0.452827*E
V1123 Cas	P	-	1:23	79° / N	10.91-21.11 (I)	EA	51427.8223+4.502*E
CzeV268 Per	P	-	1:25	75° / SE	14.4-15.3 (Clear)	EW	55808.2512+0.38818*E
CzeV267 And	P	-	1:29	87° / S	15.8-16.5 (C)	EW	55807.42028+0.2954*E
TYC 3807- UMa	P	-	1:34	30° / NE	9.5-9.7 (V)	1	56267.92908+0.2277135*E
CzeV343B Aur	P	-	1:46	48° / E	13.47-13.59 (V)	4.4	55968.33977+0.806931*E
CzeV252 UMi	P	-	1:48	46° / N	14.9-15.2 (C)	EW	55689.411015+0.29518*E
V0538 Peg	P	-	2:6	42° / W	12.54-12.64 (V)	1	58410.45142+0.888628*E
CzeV1566 Ori	S	-	2:7	42° / E	14.77-15.28 (V)	0.1	58117.05353+0.348075*E
CzeV1574 Gem	S	-	2:41	31° / E	16.32-16.66 (V)	0.1	58513.70223+0.236793*E
SvkV67 Cep	P	-	3:1	53° / NW	13.66-14.26 (V)	EW	57518.37698+0.3352*E
CzeV177 Gem	P	-	3:4	37° / SE	12.8-13.1 (C)	EW	55155.52868+0.359857*E
CzeV1570 Ori	S	-	3:21	52° / SE	12.99-13.12 (V)	0.1	58519.5375465+0.345053*E
V1094 Cas	S	-	3:30	65° / NW	12.19-12.53 (Rc)	EB	54683.42245+0.5142909*E
V631 Aql	P	-	18:43	52° / S	13.5-14.9 (V)	EA	56937.614+3.4685*E
KIC 98322 Cyg	S	-	18:51	87° / S	12.27-12.27 (0.19)	EW	55688.73+0.4579485*E
CzeV1503 Cas	S	-	19:42	52° / NE	14.5-14.62 (V)	0.1	58487.907396+0.757672*E
CzeV622 Per	S	-	19:50	39° / NE	13.2-13.85 (V)	3	54349.611+2.894365*E
CzeV1502 Cas	P	-	19:51	52° / NE	13.63-13.79 (V)	0.1	58487.45031+0.452827*E
CzeV266 And	S	-	19:56	39° / NE	14.9-15.7 (Clear)	EA	52000.4478+1.0077*E
CzeV134 Cas	P	-	20:16	28° / NW	11.45-11.63 (Rc)	RRc	53236.50412+0.419794*E
CzeV 1249 Cam	P	-	20:41	35° / NE	12.97-13.38 (V)	6	57605.191765+1.363574*E
HD 213597 Aqr	P	-	21:7	41° / S	7.790-7.815 (V)	4.7	55799.3292+2.4238*E
V1094 Cas	P	-	21:19	61° / NE	12.19-12.66 (Rc)	EB	54543.792+0.5142909*E
CzeV623 And	S	-	21:27	45° / E	12,33-12,47 (clear)	EW	54333+0.466395*E
CzeV261 Cyg	P	-	21:42	54° / W	13.28-13.64 (C)	EW	55732.40643+0.335595*E
CzeV267 And	S	-	21:53	56° / E	15.8-16.3 (C)	EW	55808.45184+0.2954*E
CzeV265 And	P	-	22:16	60° / E	15.9-16.4 (C)	EW	55796.55235+0.3647*E
CzeV208 Cam	P	-	23:0	53° / NE	12.2-24.1 (R)	EB	55650.522528+0.41125*E
SvkV67 Cep	S	-	23:1	68° / N	13.66-14.16 (V)	EW	57518.54553+0.3352*E
CzeV688 Per	P	-	23:19	65° / NE	13.3-13.6 (C)	3	54375.7653+3.46775*E
SvkV23 Lac	S	-	23:24	72° / SW	12.25-12.50 (C)	EW	54387.55111+0.3499823*E
SvkV098 Aur	P	-	23:32	45° / NE	12.11-12.39 (V)	1	57646.36457+0.4309828*E
SvkV 20 And	P	-	23:34	82° / SE	11.5-11.8 (V)	EA	55482.323+1.1854*E
SvkV 39 Lac	S	-	23:44	72° / NW	11.4-11.4 (V)	2	56495.252+1.446856*E
CzeV132 Lac	P	-	23:46	71° / W	15.6-16.3 (C)	EW	54337.43655+0.33658*E
CzeV1567 Ori	P	-	23:53	22° / E	14.97-15.59 (V)	0.1	58397.0745+0.585775*E

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