| E | O (JD) | O (dat) | Period |
| -56 | 2415125 | 1900-04-15 | 347.9 |
| -53 | 2416160 | 1903-02-14 | 348.45 |
| -52 | 2416515 | 1904-02-04 | 348.78 |
| -51 | 2416860 | 1905-01-14 | 349.56 |
| -50 | 2417203 | 1905-12-23 | 350.21 |
| -48 | 2417910 | 1907-11-30 | 350.01 |
| -47 | 2418260 | 1908-11-14 | 350.37 |
| -46 | 2418610 | 1909-10-30 | 348.9 |
| -45 | 2418972 | 1910-10-27 | 348.51 |
| -44 | 2419327 | 1911-10-17 | 348.25 |
| -42 | 2420010 | 1913-08-30 | 348.35 |
| -39 | 2421060 | 1916-07-15 | 348.33 |
| -31 | 2423830 | 1924-02-14 | 348.44 |
| -30 | 2424180 | 1925-01-29 | 348.22 |
| -29 | 2424530 | 1926-01-14 | 348.41 |
| -27 | 2425250 | 1928-01-04 | 348.96 |
| -26 | 2425590 | 1928-12-09 | 349.41 |
| -25 | 2425950 | 1929-12-04 | 350.93 |
| -24 | 2426280 | 1930-10-30 | 350.23 |
| -23 | 2426639 | 1931-10-24 | 349.13 |
| -22 | 2426990 | 1932-10-09 | 347.98 |
| -20 | 2427690 | 1934-09-09 | 348.15 |
| -19 | 2428045 | 1935-08-30 | 347.45 |
| -18 | 2428380 | 1936-07-30 | 347.7 |
| -17 | 2428720 | 1937-07-05 | 346.5 |
| -16 | 2429070 | 1938-06-20 | 345.89 |
| -15 | 2429425 | 1939-06-10 | 345.63 |
| -14 | 2429760 | 1940-05-10 | 345.55 |
| -13 | 2430117 | 1941-05-02 | 346.28 |
| -12 | 2430450 | 1942-03-31 | 346.93 |
| -11 | 2430800 | 1943-03-16 | 347.03 |
| -10 | 2431151 | 1944-03-01 | 347.41 |
| -9 | 2431492 | 1945-02-05 | 348.52 |
| -8 | 2431844 | 1946-01-23 | 348.99 |
| -7 | 2432200 | 1947-01-14 | 351.36 |
| -6 | 2432544 | 1947-12-24 | 351.49 |
| -5 | 2432895 | 1948-12-09 | 351.63 |
| -4 | 2433250 | 1949-11-29 | 351.67 |
| -3 | 2433599 | 1950-11-13 | 351.66 |
| 29 | 2444851 | 1981-09-03 | 351.65 |
| 30 | 2445205 | 1982-08-23 | 351.72 |
| 31 | 2445565 | 1983-08-18 | 351.7 |
| 32 | 2445909 | 1984-07-27 | 351.74 |
| 33 | 2446259 | 1985-07-12 | 351.81 |
| 34 | 2446610 | 1986-06-28 | 352.59 |
| 36 | 2447321 | 1988-06-08 | 352.71 |
| 37 | 2447665 | 1989-05-18 | 353.02 |
| 38 | 2448030 | 1990-05-18 | 353.7 |
| 39 | 2448376 | 1991-04-29 | 354.01 |
| 40 | 2448735 | 1992-04-22 | 354.07 |
| 41 | 2449087 | 1993-04-09 | 354.63 |
| 42 | 2449444 | 1994-04-01 | 354.87 |
| 43 | 2449798 | 1995-03-21 | 354.15 |
| 44 | 2450151 | 1996-03-08 | 353.93 |
| 45 | 2450502 | 1997-02-22 | 352.82 |
| 46 | 2450870 | 1998-02-25 | 352.07 |
| 47 | 2451216 | 1999-02-06 | 351.09 |
| 48 | 2451561 | 2000-01-17 | 350.47 |
| 49 | 2451913 | 2001-01-03 | 349.69 |
| 50 | 2452255 | 2001-12-11 | 349.31 |
| 51 | 2452608 | 2002-11-29 | 348.94 |
| 52 | 2452955 | 2003-11-11 | 349.2 |
| 54 | 2453659 | 2005-10-15 | 349.33 |
| 55 | 2454002 | 2006-09-23 | 349.3 |
| 56 | 2454357 | 2007-09-13 | 349.2 |
| 57 | 2454707 | 2008-08-28 | 349.1 |
| 62 | 2456450 | 2013-06-06 | 348.96 |
| 63 | 2456800 | 2014-05-22 | 348.84 |
| 64 | 2457148 | 2015-05-05 | 348.85 |
| 65 | 2457491 | 2016-04-12 | 349.15 |
| 66 | 2457846 | 2017-04-02 | 349.89 |
| 67 | 2458190 | 2018-03-12 | 350.75 |
| 68 | 2458543 | 2019-02-28 | 351.22 |
| 69 | 2458890 | 2020-02-10 | 352 |
| 70 | 2459258 | 2021-02-12 | 353.11 |
| 71 | 2459612 | 2022-02-01 | 353.74 |
| 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. |