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
TYC 3807- UMa	P	-	0:22	31° / NE	9.5-9.7 (V)	1	56267.92908+0.2277135*E
CzeV1570 Ori	P	-	0:22	38° / E	12.99-13.12 (V)	0.1	58519.36502+0.345053*E
CzeV268 Per	P	-	0:30	77° / SE	14.4-15.3 (Clear)	EW	55808.2512+0.38818*E
CzeV252 UMi	P	-	0:48	46° / N	14.9-15.2 (C)	EW	55689.411015+0.29518*E
CzeV267 And	P	-	0:51	82° / W	15.8-16.5 (C)	EW	55807.42028+0.2954*E
CzeV1503 Cas	S	-	0:51	72° / NW	14.5-14.62 (V)	0.1	58487.907396+0.757672*E
CzeV323 Cyg	P	-	1:3	32° / W	12.5-12.8 (C)	EW	57624.41516+0.429145*E
CzeV323 Cyg	S	-	1:5	31° / W	12.5-12.5 (C)	EW	55832.7365+0.429145*E
CzeV1559 Gem	S	-	1:12	30° / E	14.3-14.62 (V)	0.1	58413.684143+0.3559661*E
CzeV343B Aur	P	-	1:17	56° / E	13.47-13.59 (V)	4.4	55968.33977+0.806931*E
CzeV1574 Gem	P	-	1:38	34° / E	16.32-16.66 (V)	0.1	58513.58384+0.236793*E
SvkV67 Cep	S	-	1:50	52° / NW	13.66-14.16 (V)	EW	57518.54553+0.3352*E
CzeV265 And	P	-	1:56	72° / W	15.9-16.4 (C)	EW	55796.55235+0.3647*E
CzeV1567 Ori	P	-	1:59	53° / SE	14.97-15.59 (V)	0.1	58397.0745+0.585775*E
TYC 3807- UMa	P	-	2:2	42° / NE	9.45-9.77 (V)	1	56346.7849+1.305502*E
CzeV343A Aur	P	-	2:7	64° / SE	13.47-13.72 (V)	5.2	55958.36058+1.209373*E
SvkV098 Aur	P	-	2:22	82° / E	12.11-12.39 (V)	1	57646.36457+0.4309828*E
CzeV1502 Cas	P	-	2:39	59° / NW	13.63-13.79 (V)	0.1	58487.45031+0.452827*E
CzeV208 Cam	S	-	3:20	77° / NW	12.2-24.2 (R)	EB	55650.318182+0.41125*E
CzeV1566 Ori	P	-	3:31	60° / S	14.77-15.28 (V)	0.1	58116.8795+0.348075*E
SvkV23 Lac	P	-	3:35	22° / NW	12.25-12.60 (C)	EW	54387.7261+0.3499823*E
CzeV1575 Gem	S	-	3:41	49° / SE	12.74-12.80 (V)	0.1	58136.25675+0.570519*E
SvkV30 Per	P	-	17:41	34° / NE	12.3-12.6 (V)	EW	54332.747+0.979176*E
CzeV626 Aql	S	-	18:21	51° / S	13.2-13.45 (V)	EA	51381.815+1.651042*E
CzeV688 Per	P	-	18:40	39° / NE	13.3-13.6 (C)	3	54375.7653+3.46775*E
CzeV134 Cas	P	-	20:1	23° / N	11.45-11.63 (Rc)	RRc	53236.50412+0.419794*E
KIC 98322 Cyg	S	-	20:25	61° / W	12.27-12.27 (0.19)	EW	55688.73+0.4579485*E
CzeV132 Lac	P	-	20:35	86° / S	15.6-16.3 (C)	EW	54337.43655+0.33658*E
CzeV261 Cyg	S	-	21:8	46° / W	13.28-13.54 (C)	EW	55755.39659+0.335595*E
CzeV623 And	S	-	21:9	56° / E	12,33-12,47 (clear)	EW	54333+0.466395*E
CzeV1502 Cas	S	-	21:13	72° / NE	13.63-13.74 (V)	0.1	58487.6767235+0.452827*E
SvkV098 Aur	S	-	21:15	38° / NE	12.11-12.39 (V)	1	58787.39349+0.4309828*E
CzeV267 And	S	-	21:15	63° / E	15.8-16.3 (C)	EW	55808.45184+0.2954*E
SvkV67 Cep	P	-	21:47	68° / N	13.66-14.26 (V)	EW	57518.37698+0.3352*E
CzeV208 Cam	P	-	22:22	59° / NE	12.2-24.1 (R)	EB	55650.522528+0.41125*E
CzeV1565 Ori	P	-	22:41	23° / E	13.65-14.04 (V)	0.1	58515.30576+0.550467*E
SvkV 39 Lac	P	-	23:15	64° / NW	11.4-11.4 (V)	2	56494.529+1.446856*E
CzeV1566 Ori	S	-	23:20	29° / E	14.77-15.28 (V)	0.1	58117.05353+0.348075*E
V1094 Cas	P	-	23:22	81° / N	12.19-12.66 (Rc)	EB	54543.792+0.5142909*E
SvkV23 Lac	S	-	23:23	60° / W	12.25-12.50 (C)	EW	54387.55111+0.3499823*E
CzeV266 And	S	-	23:49	86° / SE	14.9-15.7 (Clear)	EA	52000.4478+1.0077*E
CzeV623 And	P	-	23:50	76° / S	12,33-12,48 (clear)	EW	54333.578+0.466395*E
CzeV 1249 Cam	S	-	23:57	71° / NE	12.97-13.38 (V)	6	57605.874+1.363574*E
CzeV177 Gem	P	-	23:59	21° / E	12.8-13.1 (C)	EW	55155.52868+0.359857*E

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