| E | O (JD) | O (dat) | Period |
| -64 | 2415830 | 1902-03-21 | 399.47 |
| -63 | 2416224 | 1903-04-19 | 400.24 |
| -62 | 2416622 | 1904-05-21 | 400.29 |
| -61 | 2417023 | 1905-06-26 | 400.45 |
| -60 | 2417430 | 1906-08-07 | 400.73 |
| -52 | 2420620 | 1915-05-02 | 401.05 |
| -51 | 2421036 | 1916-06-21 | 401.31 |
| -50 | 2421430 | 1917-07-20 | 401.79 |
| -49 | 2421836 | 1918-08-30 | 402.37 |
| -48 | 2422245 | 1919-10-13 | 403.58 |
| -47 | 2422654 | 1920-11-25 | 406.9 |
| -46 | 2423046 | 1921-12-22 | 407.01 |
| -45 | 2423466 | 1923-02-15 | 407.53 |
| -44 | 2423875 | 1924-03-30 | 406.81 |
| -43 | 2424293 | 1925-05-22 | 405.34 |
| -42 | 2424687 | 1926-06-20 | 403.7 |
| -41 | 2425096 | 1927-08-03 | 402.35 |
| -40 | 2425501 | 1928-09-11 | 400.09 |
| -39 | 2425894 | 1929-10-09 | 398.39 |
| -38 | 2426283 | 1930-11-02 | 397.02 |
| -37 | 2426678 | 1931-12-02 | 396.3 |
| -36 | 2427080 | 1933-01-07 | 395.45 |
| -35 | 2427475 | 1934-02-06 | 395.02 |
| -34 | 2427869 | 1935-03-07 | 395.41 |
| -33 | 2428266 | 1936-04-07 | 395.22 |
| -32 | 2428657 | 1937-05-03 | 395.53 |
| -31 | 2429054 | 1938-06-04 | 396 |
| -30 | 2429446 | 1939-07-01 | 397.27 |
| -29 | 2429848 | 1940-08-06 | 398.95 |
| -28 | 2430233 | 1941-08-26 | 400.78 |
| -27 | 2430645 | 1942-10-12 | 402.67 |
| -26 | 2431047 | 1943-11-18 | 403.89 |
| -25 | 2431456 | 1944-12-31 | 405.46 |
| -24 | 2431866 | 1946-02-14 | 406.4 |
| -23 | 2432275 | 1947-03-30 | 407.36 |
| -22 | 2432681 | 1948-05-09 | 407.27 |
| -21 | 2433080 | 1949-06-12 | 405.72 |
| -20 | 2433496 | 1950-08-02 | 405.63 |
| -19 | 2433900 | 1951-09-10 | 405.46 |
| -18 | 2434309 | 1952-10-23 | 405.47 |
| -17 | 2434716 | 1953-12-04 | 405.27 |
| -16 | 2435086 | 1954-12-09 | 405.07 |
| -15 | 2435524 | 1956-02-20 | 404.69 |
| -14 | 2435927 | 1957-03-29 | 404.29 |
| -13 | 2436333 | 1958-05-09 | 403.79 |
| -12 | 2436731 | 1959-06-11 | 403.72 |
| -11 | 2437135 | 1960-07-19 | 404.08 |
| -10 | 2437543 | 1961-08-31 | 401.95 |
| -9 | 2437936 | 1962-09-28 | 400.95 |
| -8 | 2438337 | 1963-11-03 | 400.65 |
| -7 | 2438743 | 1964-12-13 | 400.15 |
| -6 | 2439151 | 1966-01-25 | 398.39 |
| -5 | 2439539 | 1967-02-17 | 397.34 |
| -4 | 2439929 | 1968-03-13 | 396.32 |
| -3 | 2440342 | 1969-04-30 | 395.71 |
| -2 | 2440733 | 1970-05-26 | 395.3 |
| -1 | 2441108 | 1971-06-05 | 395.44 |
| 0 | 2441514 | 1972-07-15 | 396.38 |
| 1 | 2441901 | 1973-08-06 | 396.97 |
| 2 | 2442310 | 1974-09-19 | 398.27 |
| 3 | 2442708 | 1975-10-22 | 400.21 |
| 4 | 2443107 | 1976-11-24 | 401.99 |
| 5 | 2443508 | 1977-12-30 | 402.63 |
| 6 | 2443906 | 1979-02-01 | 403.45 |
| 7 | 2444327 | 1980-03-28 | 403.88 |
| 8 | 2444725 | 1981-04-30 | 404.35 |
| 9 | 2445129 | 1982-06-08 | 405.84 |
| 10 | 2445533 | 1983-07-17 | 405.37 |
| 11 | 2445935 | 1984-08-22 | 403.99 |
| 12 | 2446346 | 1985-10-07 | 401.93 |
| 13 | 2446745 | 1986-11-10 | 401.44 |
| 14 | 2447177 | 1988-01-16 | 400.55 |
| 15 | 2447549 | 1989-01-22 | 399.48 |
| 16 | 2447936 | 1990-02-13 | 399.45 |
| 17 | 2448329 | 1991-03-13 | 398.52 |
| 18 | 2448743 | 1992-04-30 | 399.19 |
| 19 | 2449140 | 1993-06-01 | 399.71 |
| 20 | 2449534 | 1994-06-30 | 402.05 |
| 21 | 2449953 | 1995-08-23 | 403.59 |
| 22 | 2450335 | 1996-09-08 | 404.52 |
| 23 | 2450757 | 1997-11-04 | 404.79 |
| 24 | 2451157 | 1998-12-09 | 405.51 |
| 25 | 2451561 | 2000-01-17 | 406.15 |
| 26 | 2451974 | 2001-03-05 | 406.25 |
| 27 | 2452381 | 2002-04-16 | 406.1 |
| 28 | 2452784 | 2003-05-24 | 405.06 |
| 29 | 2453188 | 2004-07-01 | 403.66 |
| 30 | 2453599 | 2005-08-16 | 401.77 |
| 31 | 2454006 | 2006-09-27 | 401.48 |
| 32 | 2454392 | 2007-10-18 | 401.78 |
| 33 | 2454802 | 2008-12-01 | 401.99 |
| 34 | 2455181 | 2009-12-15 | 402.52 |
| 35 | 2455575 | 2011-01-13 | 402.9 |
| 36 | 2456009 | 2012-03-22 | 404.46 |
| 37 | 2456416 | 2013-05-03 | 406.27 |
| 38 | 2456814 | 2014-06-05 | 406.87 |
| 39 | 2457224 | 2015-07-20 | 406.91 |
| 40 | 2457624 | 2016-08-23 | 406.22 |
| 41 | 2458044 | 2017-10-17 | 404.51 |
| 42 | 2458450 | 2018-11-27 | 404.15 |
| 43 | 2458849 | 2019-12-31 | 404.08 |
| 44 | 2459236 | 2021-01-21 | 403.45 |
| 45 | 2459652 | 2022-03-13 | 402.92 |
| 46 | 2460051 | 2023-04-16 | 401.36 |
| 47 | 2460455 | 2024-05-24 | 401.34 |
| 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. |