V1504 Cyg outburst YYYYMMDD(UT) mag observer 20000604.899 <148 (M. Reszelski) 20000605.990 <154 (P. A. Dubovsky) 20000606.926 <148 (M. Reszelski) 20000607.053 <153 (G. Poyner) 20000608.989 <150 (M. Reszelski) 20000608.997 <154 (P. A. Dubovsky) 20000609.964 <151 (M. Reszelski) 20000610.956 145 (P. A. Dubovsky)