| E | O (JD) | O (dat) | Period |
| -66 | 2414780 | 1899-05-05 | 364.72 |
| -65 | 2415140 | 1900-04-30 | 364.38 |
| -64 | 2415520 | 1901-05-15 | 363.78 |
| -53 | 2419538 | 1912-05-15 | 363.98 |
| -46 | 2422080 | 1919-05-01 | 364.33 |
| -44 | 2422798 | 1921-04-18 | 364.02 |
| -43 | 2423157 | 1922-04-12 | 363.19 |
| -42 | 2423521 | 1923-04-11 | 362.63 |
| -41 | 2423887 | 1924-04-11 | 363.73 |
| -40 | 2424246 | 1925-04-05 | 364.72 |
| -39 | 2424613 | 1926-04-07 | 365.14 |
| -38 | 2424983 | 1927-04-12 | 366.49 |
| -37 | 2425351 | 1928-04-14 | 367.07 |
| -36 | 2425710 | 1929-04-08 | 368.14 |
| -35 | 2426080 | 1930-04-13 | 369.79 |
| -34 | 2426459 | 1931-04-27 | 370 |
| -33 | 2426813 | 1932-04-15 | 371.64 |
| -32 | 2427200 | 1933-05-07 | 371.99 |
| -31 | 2427573 | 1934-05-15 | 370.43 |
| -30 | 2427941 | 1935-05-18 | 371.44 |
| -29 | 2428323 | 1936-06-03 | 371.72 |
| -28 | 2428675 | 1937-05-21 | 370.21 |
| -27 | 2429050 | 1938-05-31 | 369.99 |
| -26 | 2429422 | 1939-06-07 | 369.29 |
| -25 | 2429795 | 1940-06-14 | 369.51 |
| -24 | 2430161 | 1941-06-15 | 371.43 |
| -23 | 2430533 | 1942-06-22 | 370.99 |
| -22 | 2430901 | 1943-06-25 | 369.35 |
| -21 | 2431270 | 1944-06-28 | 370.36 |
| -20 | 2431655 | 1945-07-18 | 371.29 |
| -19 | 2432011 | 1946-07-09 | 370.64 |
| -18 | 2432377 | 1947-07-10 | 370.92 |
| -17 | 2432764 | 1948-07-31 | 369.92 |
| -16 | 2433128 | 1949-07-30 | 369.43 |
| -15 | 2433495 | 1950-08-01 | 369.79 |
| -14 | 2433869 | 1951-08-10 | 368.5 |
| -13 | 2434235 | 1952-08-10 | 366.92 |
| -12 | 2434603 | 1953-08-13 | 365.78 |
| -11 | 2434962 | 1954-08-07 | 365 |
| -10 | 2435338 | 1955-08-18 | 363.79 |
| -9 | 2435691 | 1956-08-05 | 362.64 |
| -8 | 2436053 | 1957-08-02 | 362.64 |
| -7 | 2436421 | 1958-08-05 | 361.14 |
| -6 | 2436776 | 1959-07-26 | 359.72 |
| -5 | 2437139 | 1960-07-23 | 360.37 |
| -4 | 2437503 | 1961-07-22 | 359.5 |
| -3 | 2437853 | 1962-07-07 | 359.49 |
| -2 | 2438212 | 1963-07-01 | 360.35 |
| -1 | 2438577 | 1964-06-30 | 360.93 |
| 0 | 2438930 | 1965-06-18 | 363.94 |
| 1 | 2439300 | 1966-06-23 | 366.36 |
| 2 | 2439660 | 1967-06-18 | 366.71 |
| 3 | 2440035 | 1968-06-27 | 367.92 |
| 4 | 2440416 | 1969-07-13 | 370.36 |
| 5 | 2440778 | 1970-07-10 | 371.87 |
| 6 | 2441145 | 1971-07-12 | 371.79 |
| 7 | 2441513 | 1972-07-14 | 370.57 |
| 8 | 2441902 | 1973-08-07 | 369.85 |
| 9 | 2442264 | 1974-08-04 | 370.14 |
| 10 | 2442636 | 1975-08-11 | 370.01 |
| 11 | 2443003 | 1976-08-12 | 370.29 |
| 12 | 2443369 | 1977-08-13 | 370.28 |
| 13 | 2443736 | 1978-08-15 | 369.64 |
| 14 | 2444102 | 1979-08-16 | 369.79 |
| 15 | 2444497 | 1980-09-14 | 370.22 |
| 16 | 2444853 | 1981-09-05 | 371.36 |
| 17 | 2445222 | 1982-09-09 | 371.92 |
| 18 | 2445594 | 1983-09-16 | 369.14 |
| 19 | 2445961 | 1984-09-17 | 367.5 |
| 20 | 2446343 | 1985-10-04 | 368.58 |
| 21 | 2446702 | 1986-09-28 | 368.57 |
| 22 | 2447065 | 1987-09-26 | 368.57 |
| 23 | 2447430 | 1988-09-25 | 367.92 |
| 24 | 2447805 | 1989-10-05 | 367.22 |
| 25 | 2448171 | 1990-10-06 | 367.87 |
| 26 | 2448544 | 1991-10-14 | 368.5 |
| 27 | 2448911 | 1992-10-15 | 368.42 |
| 28 | 2449275 | 1993-10-14 | 367.99 |
| 29 | 2449642 | 1994-10-16 | 367.57 |
| 30 | 2450012 | 1995-10-21 | 367.15 |
| 31 | 2450381 | 1996-10-24 | 368.07 |
| 32 | 2450747 | 1997-10-25 | 369.07 |
| 33 | 2451114 | 1998-10-27 | 368.57 |
| 34 | 2451481 | 1999-10-29 | 368.5 |
| 35 | 2451858 | 2000-11-09 | 370.65 |
| 36 | 2452226 | 2001-11-12 | 371.57 |
| 37 | 2452588 | 2002-11-09 | 369.71 |
| 38 | 2452964 | 2003-11-20 | 368.64 |
| 39 | 2453353 | 2004-12-13 | 368.64 |
| 40 | 2453710 | 2005-12-05 | 369.22 |
| 41 | 2454061 | 2006-11-21 | 369 |
| 42 | 2454439 | 2007-12-04 | 366.07 |
| 43 | 2454806 | 2008-12-05 | 364.71 |
| 44 | 2455177 | 2009-12-11 | 366.5 |
| 45 | 2455541 | 2010-12-10 | 366.65 |
| 46 | 2455901 | 2011-12-05 | 366.64 |
| 47 | 2456268 | 2012-12-06 | 366.78 |
| 48 | 2456634 | 2013-12-07 | 367.07 |
| 49 | 2456999 | 2014-12-07 | 368.29 |
| 50 | 2457379 | 2015-12-22 | 368.65 |
| 51 | 2457739 | 2016-12-16 | 369.72 |
| 52 | 2458118 | 2017-12-30 | 370.28 |
| 53 | 2458480 | 2018-12-27 | 369.36 |
| 54 | 2458850 | 2020-01-01 | 369.72 |
| 55 | 2459228 | 2021-01-13 | 369.43 |
| 56 | 2459589 | 2022-01-09 | 367.52 |
| E | Cycle number from the GCVS4 epoch. |
| O (JD) | Julian date at observed time for maximum. |
| O (Dat) | Same as above, expressed as date. |
| Period | Calculated mean period at cycle number E. |