| E | O (JD) | O (dat) | Period |
| -58 | 2417625 | 1907-02-18 | 384.59 |
| -55 | 2418770 | 1910-04-08 | 385.11 |
| -53 | 2419535 | 1912-05-12 | 384.92 |
| -52 | 2419930 | 1913-06-11 | 385.29 |
| -50 | 2420690 | 1915-07-11 | 385.52 |
| -49 | 2421090 | 1916-08-14 | 385.27 |
| -48 | 2421475 | 1917-09-03 | 385.22 |
| -47 | 2421850 | 1918-09-13 | 385.35 |
| -39 | 2424940 | 1927-02-28 | 384.86 |
| -38 | 2425330 | 1928-03-24 | 384.78 |
| -37 | 2425700 | 1929-03-29 | 384.4 |
| -36 | 2426080 | 1930-04-13 | 384.19 |
| -35 | 2426484 | 1931-05-22 | 384.19 |
| -34 | 2426843 | 1932-05-15 | 382.45 |
| -33 | 2427238 | 1933-06-14 | 383.19 |
| -32 | 2427622 | 1934-07-03 | 383.47 |
| -31 | 2427997 | 1935-07-13 | 384.06 |
| -30 | 2428390 | 1936-08-09 | 384.53 |
| -29 | 2428760 | 1937-08-14 | 385.15 |
| -21 | 2431840 | 1946-01-19 | 385.79 |
| -20 | 2432220 | 1947-02-03 | 385.88 |
| -18 | 2433010 | 1949-04-03 | 385.98 |
| -16 | 2433787 | 1951-05-20 | 386.07 |
| -13 | 2434940 | 1954-07-16 | 386.25 |
| 0 | 2439970 | 1968-04-23 | 386.13 |
| 1 | 2440340 | 1969-04-28 | 385.81 |
| 2 | 2440725 | 1970-05-18 | 385.24 |
| 3 | 2441117 | 1971-06-14 | 384.61 |
| 4 | 2441499 | 1972-06-30 | 383.59 |
| 5 | 2441871 | 1973-07-07 | 378.8 |
| 6 | 2442249 | 1974-07-20 | 378.71 |
| 7 | 2442631 | 1975-08-06 | 381.36 |
| 8 | 2442996 | 1976-08-05 | 381.83 |
| 9 | 2443373 | 1977-08-17 | 382.64 |
| 10 | 2443759 | 1978-09-07 | 383.13 |
| 11 | 2444140 | 1979-09-23 | 383.28 |
| 17 | 2446470 | 1986-02-08 | 383.57 |
| 18 | 2446835 | 1987-02-08 | 383.94 |
| 19 | 2447225 | 1988-03-04 | 383.77 |
| 20 | 2447600 | 1989-03-14 | 383.3 |
| 21 | 2447976 | 1990-03-25 | 382.61 |
| 22 | 2448365 | 1991-04-18 | 380.64 |
| 23 | 2448748 | 1992-05-05 | 381.56 |
| 24 | 2449126 | 1993-05-18 | 381.24 |
| 25 | 2449508 | 1994-06-04 | 381.05 |
| 26 | 2449888 | 1995-06-19 | 380.5 |
| 27 | 2450267 | 1996-07-02 | 379.81 |
| 28 | 2450658 | 1997-07-28 | 379.13 |
| 29 | 2451030 | 1998-08-04 | 379.06 |
| 30 | 2451404 | 1999-08-13 | 379.35 |
| 31 | 2451782 | 2000-08-25 | 379.95 |
| 32 | 2452164 | 2001-09-11 | 380.65 |
| 33 | 2452535 | 2002-09-17 | 380.95 |
| 34 | 2452923 | 2003-10-10 | 382.11 |
| 35 | 2453312 | 2004-11-02 | 383.55 |
| 36 | 2453698 | 2005-11-23 | 384.86 |
| 37 | 2454082 | 2006-12-12 | 385.96 |
| 38 | 2454457 | 2007-12-22 | 387.37 |
| 39 | 2454845 | 2009-01-13 | 387.62 |
| 40 | 2455242 | 2010-02-14 | 387.95 |
| 41 | 2455633 | 2011-03-12 | 388.17 |
| 43 | 2456405 | 2013-04-22 | 388.2 |
| 44 | 2456804 | 2014-05-26 | 388.25 |
| 45 | 2457184 | 2015-06-10 | 387.66 |
| 46 | 2457573 | 2016-07-03 | 387.2 |
| 47 | 2457956 | 2017-07-21 | 386.77 |
| 48 | 2458339 | 2018-08-08 | 386.55 |
| 49 | 2458729 | 2019-09-02 | 386.08 |
| 50 | 2459115 | 2020-09-22 | 386.55 |
| 51 | 2459508 | 2021-10-20 | 386.61 |
| 52 | 2459888 | 2022-11-04 | 387.23 |
| 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. |