| E | O (JD) | O (dat) | Period |
| -91 | 2411610 | 1890-08-30 | 357.49 |
| -90 | 2411960 | 1891-08-15 | 362.5 |
| -88 | 2412700 | 1893-08-24 | 365.27 |
| -87 | 2413080 | 1894-09-08 | 364.73 |
| -86 | 2413410 | 1895-08-04 | 365.46 |
| -82 | 2414890 | 1899-08-23 | 366.04 |
| -80 | 2415620 | 1901-08-23 | 365.09 |
| -79 | 2415983 | 1902-08-21 | 365.86 |
| -78 | 2416358 | 1903-08-31 | 367.74 |
| -77 | 2416721 | 1904-08-28 | 368.6 |
| -76 | 2417091 | 1905-09-02 | 368.46 |
| -75 | 2417448 | 1906-08-25 | 369.35 |
| -74 | 2417839 | 1907-09-20 | 369.5 |
| -73 | 2418200 | 1908-09-15 | 368.78 |
| -71 | 2418930 | 1910-09-15 | 370.5 |
| -69 | 2419690 | 1912-10-14 | 371.11 |
| -68 | 2420040 | 1913-09-29 | 369.95 |
| -67 | 2420410 | 1914-10-04 | 370.42 |
| -66 | 2420798 | 1915-10-27 | 369.27 |
| -65 | 2421169 | 1916-11-01 | 369.35 |
| -64 | 2421529 | 1917-10-27 | 370 |
| -63 | 2421898 | 1918-10-31 | 367.29 |
| -62 | 2422261 | 1919-10-29 | 366.36 |
| -61 | 2422640 | 1920-11-11 | 367.78 |
| -60 | 2422990 | 1921-10-27 | 368.85 |
| -59 | 2423360 | 1922-11-01 | 369 |
| -58 | 2423736 | 1923-11-12 | 369.36 |
| -57 | 2424111 | 1924-11-21 | 370.58 |
| -56 | 2424480 | 1925-11-25 | 372.5 |
| -55 | 2424845 | 1926-11-25 | 372.93 |
| -54 | 2425227 | 1927-12-12 | 372.57 |
| -53 | 2425591 | 1928-12-10 | 373.36 |
| -52 | 2425974 | 1929-12-28 | 374.58 |
| -51 | 2426343 | 1931-01-01 | 374.21 |
| -50 | 2426720 | 1932-01-13 | 374.93 |
| -49 | 2427098 | 1933-01-25 | 375.5 |
| -48 | 2427471 | 1934-02-02 | 374.58 |
| -47 | 2427840 | 1935-02-06 | 374.43 |
| -46 | 2428227 | 1936-02-28 | 373.07 |
| -45 | 2428595 | 1937-03-02 | 372.71 |
| -44 | 2428966 | 1938-03-08 | 373.57 |
| -43 | 2429339 | 1939-03-16 | 372.65 |
| -42 | 2429702 | 1940-03-13 | 370.93 |
| -41 | 2430085 | 1941-03-31 | 370.43 |
| -40 | 2430456 | 1942-04-06 | 371.64 |
| -39 | 2430828 | 1943-04-13 | 371.93 |
| -38 | 2431187 | 1944-04-06 | 370.29 |
| -37 | 2431560 | 1945-04-14 | 368.72 |
| -36 | 2431948 | 1946-05-07 | 367.71 |
| -35 | 2432300 | 1947-04-24 | 367.43 |
| -34 | 2432671 | 1948-04-29 | 365.43 |
| -33 | 2433032 | 1949-04-25 | 364 |
| -32 | 2433400 | 1950-04-28 | 365.86 |
| -31 | 2433759 | 1951-04-22 | 365.5 |
| -30 | 2434104 | 1952-04-01 | 364.28 |
| -29 | 2434500 | 1953-05-02 | 365.07 |
| -28 | 2434870 | 1954-05-07 | 366.15 |
| -27 | 2435218 | 1955-04-20 | 367.58 |
| -26 | 2435585 | 1956-04-21 | 364.35 |
| -25 | 2435958 | 1957-04-29 | 360.57 |
| -24 | 2436327 | 1958-05-03 | 361.78 |
| -23 | 2436682 | 1959-04-23 | 362.22 |
| -22 | 2437023 | 1960-03-29 | 361 |
| -21 | 2437395 | 1961-04-05 | 359.64 |
| -20 | 2437758 | 1962-04-03 | 359.57 |
| -19 | 2438116 | 1963-03-27 | 361.78 |
| -18 | 2438481 | 1964-03-26 | 362 |
| -17 | 2438839 | 1965-03-19 | 362.15 |
| -16 | 2439204 | 1966-03-19 | 364 |
| -15 | 2439566 | 1967-03-16 | 364.21 |
| -14 | 2439920 | 1968-03-04 | 364.93 |
| -13 | 2440303 | 1969-03-22 | 366.22 |
| -12 | 2440667 | 1970-03-21 | 368.08 |
| -11 | 2441029 | 1971-03-18 | 370.93 |
| -10 | 2441400 | 1972-03-23 | 371.71 |
| -9 | 2441770 | 1973-03-28 | 370.93 |
| -8 | 2442153 | 1974-04-15 | 371.5 |
| -7 | 2442526 | 1975-04-23 | 372.43 |
| -6 | 2442901 | 1976-05-02 | 372.78 |
| -5 | 2443262 | 1977-04-28 | 372.64 |
| -4 | 2443635 | 1978-05-06 | 371.85 |
| -3 | 2444008 | 1979-05-14 | 371.08 |
| -2 | 2444381 | 1980-05-21 | 371.43 |
| -1 | 2444759 | 1981-06-03 | 372.35 |
| 0 | 2445126 | 1982-06-05 | 372.5 |
| 1 | 2445496 | 1983-06-10 | 372.35 |
| 2 | 2445867 | 1984-06-15 | 371.22 |
| 3 | 2446243 | 1985-06-26 | 370.15 |
| 4 | 2446615 | 1986-07-03 | 370.07 |
| 5 | 2446987 | 1987-07-10 | 369.57 |
| 6 | 2447350 | 1988-07-07 | 368.93 |
| 7 | 2447717 | 1989-07-09 | 369.08 |
| 8 | 2448086 | 1990-07-13 | 368.5 |
| 9 | 2448451 | 1991-07-13 | 368.07 |
| 10 | 2448824 | 1992-07-20 | 368.71 |
| 11 | 2449201 | 1993-08-01 | 369.93 |
| 12 | 2449560 | 1994-07-26 | 370.29 |
| 13 | 2449930 | 1995-07-31 | 368.86 |
| 14 | 2450299 | 1996-08-03 | 367.78 |
| 15 | 2450683 | 1997-08-22 | 368.57 |
| 16 | 2451038 | 1998-08-12 | 369.85 |
| 17 | 2451401 | 1999-08-10 | 368.72 |
| 18 | 2451773 | 2000-08-16 | 366.43 |
| 19 | 2452148 | 2001-08-26 | 366.57 |
| 20 | 2452520 | 2002-09-02 | 368.07 |
| 21 | 2452871 | 2003-08-19 | 368.5 |
| 22 | 2453241 | 2004-08-23 | 368.22 |
| 23 | 2453612 | 2005-08-29 | 367.15 |
| 24 | 2453980 | 2006-09-01 | 367.85 |
| 25 | 2454353 | 2007-09-09 | 370.28 |
| 26 | 2454723 | 2008-09-13 | 370.78 |
| 27 | 2455085 | 2009-09-10 | 370.43 |
| 28 | 2455456 | 2010-09-16 | 371 |
| 29 | 2455840 | 2011-10-05 | 371.43 |
| 30 | 2456204 | 2012-10-03 | 371.43 |
| 31 | 2456574 | 2013-10-08 | 371.71 |
| 32 | 2456953 | 2014-10-22 | 371.22 |
| 33 | 2457323 | 2015-10-27 | 370.5 |
| 34 | 2457685 | 2016-10-23 | 370.07 |
| 35 | 2458060 | 2017-11-02 | 369.71 |
| 36 | 2458433 | 2018-11-10 | 370.57 |
| 37 | 2458798 | 2019-11-10 | 371.43 |
| 38 | 2459161 | 2020-11-07 | 371.06 |
| 39 | 2459542 | 2021-11-23 | 369.74 |
| 40 | 2459922 | 2022-12-08 | 369.08 |
| 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. |