I calculated the minimum time. minI CYGMY 2453689.303 - Hel SSW n=15 (calculated by Nagai) MY Cyg JD(hel)=2453689.303 C=2453689.305 E=4954 O-C=-0.002 - 14/Nov/2005 MY Cyg (By Mr.Swierczynski) - 8.5+ | * | | * * | * * * 9.0+ * * | * * | * | | 9.5+ +-----------+-----------+-----------+ 17 18 19 20 (UT)