I calculated O-C from the data of Mr. SXN. minI ANDAB 2452512.672 0.001 Geo SXN n=11 (calculated by Nagai) minI ANDRT 2452511.677 0.004 Geo SXN n=12 (calculated by Nagai) minI AQLV343 2452511.752 - Geo SXN n=10 (calculated by Nagai) minI CASIR 2452511.719 0.001 Geo SXN n=18 (calculated by Nagai) minI CYGZZ 2452511.652 0.003 Geo SXN n=11 (calculated by Nagai) minI LACSW 2452511.703 - Geo SXN n=12 (calculated by Nagai) minI PEGBG 2452511.697 0.008 Geo SXN n=16 (calculated by Nagai) minI PEGDO 2452511.783 - Geo SXN n=11 (calculated by Nagai) AB And JD(hel)=2452512.676 C=2452512.685 E=49423 O-C=-0.009 RT And JD(hel)=2452511.680 C=2452511.677 E=18078 O-C=+0.003 V343 Aql JD(hel)=2452511.756 C=2452511.797 E=13048 O-C=-0.041 IR Cas JD(hel)=2452511.721 C=2452511.712 E=14908 O-C=+0.009 ZZ Cyg JD(hel)=2452511.655 C=2452511.695 E=11949 O-C=-0.040 SW Lac JD(hel)=2452511.707 C=2452511.773 E=22563 O-C=-0.066 BG Peg JD(hel)=2452511.702 C=2452511.539 E=3574 O-C=+0.163 DO Peg JD(hel)=2452511.788 C=2452512.124 E=2793 O-C=-0.336 - 26/Aug/2002 AB And (By Mr.SXN) - 09 + | * * + * * | * * 10 + * * | *** + | 11 + +--------+--------+--------+--------+ 02 03 04 05 06 (UT) - 25/Aug/2002 RT And (By Mr.SXN) - 09 + | * * * + * * * | ** * * 10 + ** | + | 11 + +--------+--------+--------+--------+ 02 03 04 05 06 (UT) - 25/Aug/2002 V343 Aql (By Mr.SXN) - 10 + | * * 11 + * | * 12 + * ** ** * | 13 + +-----+-----+-----+-----+-----+-----+ 02 03 04 05 06 07 08 (UT) - 25/Aug/2002 IR Cas (By Mr.SXN) - 10 + | 11 + * **** * | *** ** ** 12 + * ** ** | 13 + +-----+-----+-----+-----+-----+-----+ 02 03 04 05 06 07 08 (UT) - 25/Aug/2002 OR Cas (By Mr.SXN) - 11 + | + * * * * | 12 + * | * ** + | 13 + +--------+--------+--------+--------+ 04 05 06 07 08 (UT) - 25/Aug/2002 ZZ Cyg (By Mr.SXN) - 10 + | + * | * * 11 + * | * * * *** + * | 12 + +--------+--------+--------+--------+ 02 03 04 05 06 (UT) - 25/Aug/2002 SW Lac (By Mr.SXN) - 85 + | | | 90 + * * * * | * * | * ** * * | * 95 + +--------+--------+--------+--------+ 02 03 04 05 06 (UT) - 25/Aug/2002 BG Peg (By Mr.SXN) - 10 + | + * * | * * * * ** 11 + * * | * * * + * * * | 12 + +------+------+------+------+------+- 02 03 04 05 06 07 (UT) - 25/Aug/2002 DO Peg (By Mr.SXN) - 10 + | 11 + * * * * | * * * ** 12 + ** | 13 + +--------+--------+--------+--------+ 04 05 06 07 08 (UT)