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
CzeV1502 Cas	P	-	0:7	77° / NW	13.63-13.79 (V)	0.1	58487.45031+0.452827*E
CzeV267 And	P	-	0:49	84° / SW	15.8-16.5 (C)	EW	55807.42028+0.2954*E
CzeV1565 Ori	S	-	0:55	43° / E	13.65-13.80 (V)	0.1	58515.58099+0.550467*E
SvkV 20 And	S	-	1:7	65° / W	11.5-11.5 (V)	EA	55482.916+1.1854*E
CzeV1567 Ori	S	-	1:8	44° / SE	14.97-15.22 (V)	0.1	58397.36738+0.585775*E
CzeV1570 Ori	P	-	1:22	46° / SE	12.99-13.12 (V)	0.1	58519.36502+0.345053*E
CzeV1574 Gem	P	-	1:24	30° / E	16.32-16.66 (V)	0.1	58513.58384+0.236793*E
V0538 Peg	P	-	1:42	34° / W	12.54-12.64 (V)	1	58410.45142+0.888628*E
CzeV1559 Gem	P	-	1:45	34° / E	14.3-14.62 (V)	0.1	58413.50616+0.3559661*E
CzeV134 Cas	P	-	1:45	27° / NE	11.45-11.63 (Rc)	RRc	53236.50412+0.419794*E
CzeV177 Gem	P	-	1:49	36° / SE	12.8-13.1 (C)	EW	55155.52868+0.359857*E
SvkV23 Lac	S	-	1:55	38° / W	12.25-12.50 (C)	EW	54387.55111+0.3499823*E
SvkV30 Per	P	-	1:56	75° / W	12.3-12.6 (V)	EW	54332.747+0.979176*E
TYC 3807- UMa	S	-	2:16	43° / NE	9.5-9.7 (V)	1	56268.04293675+0.2277135*E
CzeV623 And	P	-	2:23	64° / W	12,33-12,48 (clear)	EW	54333.578+0.466395*E
CzeV208 Cam	S	-	2:26	83° / N	12.2-24.2 (R)	EB	55650.318182+0.41125*E
CzeV622 Per	S	-	2:57	70° / NW	13.2-13.85 (V)	3	54349.611+2.894365*E
SvkV67 Cep	P	-	3:4	47° / NW	13.66-14.26 (V)	EW	57518.37698+0.3352*E
CzeV1566 Ori	S	-	3:27	60° / S	14.77-15.28 (V)	0.1	58117.05353+0.348075*E
TYC 3807- UMa	P	-	3:47	55° / NE	9.45-9.77 (V)	1	56346.7849+1.305502*E
CzeV688 Per	S	-	3:59	63° / NW	13.3-13.45 (C)	3	54377.43+3.46775*E
CzeV1502 Cas	S	-	18:41	53° / NE	13.63-13.74 (V)	0.1	58487.6767235+0.452827*E
CzeV1503 Cas	P	-	18:58	55° / NE	14.5-14.62 (V)	0.1	58487.52856+0.757672*E
SvkV 39 Lac	P	-	19:19	78° / NE	11.4-11.4 (V)	2	56494.529+1.446856*E
V631 Aql	S	-	19:27	47° / SW	13.5-13.5 (V)	EA	56939.348+3.4685*E
CzeV626 Aql	S	-	19:43	45° / SW	13.2-13.45 (V)	EA	51381.815+1.651042*E
CzeV714 Cep	S	-	20:14	75° / N	10.57-10.57 (C)	1	51322.849+3.79464*E
CzeV268 Per	P	-	20:38	42° / E	14.4-15.3 (Clear)	EW	55808.2512+0.38818*E
CzeV323 Cyg	P	-	20:41	72° / SW	12.5-12.8 (C)	EW	57624.41516+0.429145*E
CzeV323 Cyg	S	-	20:43	72° / SW	12.5-12.5 (C)	EW	55832.7365+0.429145*E
CzeV267 And	S	-	21:13	61° / E	15.8-16.3 (C)	EW	55808.45184+0.2954*E
CzeV208 Cam	P	-	21:28	51° / NE	12.2-24.1 (R)	EB	55650.522528+0.41125*E
SvkV23 Lac	P	-	21:43	75° / SW	12.25-12.60 (C)	EW	54387.7261+0.3499823*E
KIC 98322 Cyg	P	-	22:1	48° / W	12.27-12.46 (0.19)	EW	55688.49913+0.4579485*E
CzeV132 Lac	P	-	22:25	72° / W	15.6-16.3 (C)	EW	54337.43655+0.33658*E
SvkV098 Aur	P	-	22:55	50° / NE	12.11-12.39 (V)	1	57646.36457+0.4309828*E
SvkV67 Cep	S	-	23:4	64° / N	13.66-14.16 (V)	EW	57518.54553+0.3352*E
V1094 Cas	P	-	23:6	81° / N	12.19-12.66 (Rc)	EB	54543.792+0.5142909*E
CzeV252 UMi	P	-	23:7	47° / N	14.9-15.2 (C)	EW	55689.411015+0.29518*E
CzeV265 And	P	-	23:15	81° / E	15.9-16.4 (C)	EW	55796.55235+0.3647*E
CzeV1566 Ori	P	-	23:17	27° / E	14.77-15.28 (V)	0.1	58116.8795+0.348075*E
CzeV266 And	P	-	23:27	82° / E	14.9-15.3 (Clear)	EA	51999.818+1.0077*E
CzeV343A Aur	P	-	23:28	38° / E	13.47-13.72 (V)	5.2	55958.36058+1.209373*E
CzeV261 Cyg	P	-	23:31	25° / W	13.28-13.64 (C)	EW	55732.40643+0.335595*E
TYC 3807- UMa	P	-	23:32	25° / NE	9.5-9.7 (V)	1	56267.92908+0.2277135*E
CzeV623 And	S	-	23:42	75° / SE	12,33-12,47 (clear)	EW	54333+0.466395*E

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