Maxima for omi Cet
Period: 331.96, Epoch: 2444839
Back to main page  Mean light curve  Period diagram

E Mag O (JD) O (dat) C (JD) C (Dat) O-C Source
-424   2304169 1596-07-01 2304088 1596-04-11 81 AnHar, 1909, vol 55, p 95
-410   2308781 1609-02-15 2308735 1608-12-31 46 AnHar, 1909, vol 55, p 95
-377   2319714 1639-01-22 2319690 1638-12-29 24 AnHar, 1909, vol 55, p 95
-354   2327308 1659-11-07 2327325 1659-11-24 -17 AnHar, 1909, vol 55, p 95
-353 2.7 2327652 1660-10-16 2327657 1660-10-21 -5 SVO
-352 4.0 2327975 1661-09-04 2327989 1661-09-18 -14 SVO
-351   2328320 1662-08-15 2328321 1662-08-16 -1 AnHar, 1909, vol 55, p 95
-346   2329980 1667-03-02 2329981 1667-03-03 -1 AnHar, 1909, vol 55, p 95
-344   2330629 1668-12-10 2330645 1668-12-26 -16 AnHar, 1909, vol 55, p 95
-343   2330954 1669-10-31 2330977 1669-11-23 -23 AnHar, 1909, vol 55, p 95
-342   2331282 1670-09-24 2331309 1670-10-21 -27 AnHar, 1909, vol 55, p 95
-341   2331624 1671-09-01 2331641 1671-09-18 -17 AnHar, 1909, vol 55, p 95
-335   2333586 1677-01-14 2333632 1677-03-01 -46 AnHar, 1909, vol 55, p 95
-334   2333933 1677-12-27 2333964 1678-01-27 -31 AnHar, 1909, vol 55, p 95
-333 2.5 2334256 1678-11-15 2334296 1678-12-25 -40 SVO
-332   2334580 1679-10-05 2334628 1679-11-22 -48 AnHar, 1909, vol 55, p 95
-330   2335278 1681-09-02 2335292 1681-09-16 -14 AnHar, 1909, vol 55, p 95
-324   2337233 1687-01-09 2337284 1687-03-01 -51 AnHar, 1909, vol 55, p 95
-313   2340909 1697-02-01 2340936 1697-02-28 -27 AnHar, 1909, vol 55, p 95
-312   2341266 1698-01-24 2341267 1698-01-25 -1 AnHar, 1909, vol 55, p 95
-310   2341940 1699-11-29 2341931 1699-11-20 9 AnHar, 1909, vol 55, p 95
-309 2.7 2342264 1700-10-19 2342263 1700-10-18 1 SVO
-308   2342610 1701-09-30 2342595 1701-09-15 15 AnHar, 1909, vol 55, p 95
-307 4.0 2342948 1702-09-03 2342927 1702-08-13 21 SVO
-300   2345262 1709-01-03 2345251 1708-12-23 11 AnHar, 1909, vol 55, p 95
-299   2345599 1709-12-06 2345583 1709-11-20 16 AnHar, 1909, vol 55, p 95
-298   2345945 1710-11-17 2345915 1710-10-18 30 AnHar, 1909, vol 55, p 95
-297   2346277 1711-10-15 2346247 1711-09-15 30 AnHar, 1909, vol 55, p 95
-296   2346603 1712-09-05 2346579 1712-08-12 24 AnHar, 1909, vol 55, p 95
-290   2348592 1718-02-15 2348571 1718-01-25 21 AnHar, 1909, vol 55, p 95
-289   2348935 1719-01-24 2348903 1718-12-23 32 AnHar, 1909, vol 55, p 95
-287   2349603 1720-11-22 2349566 1720-10-16 37 AnHar, 1909, vol 55, p 95
-277   2352913 1729-12-15 2352886 1729-11-18 27 AnHar, 1909, vol 55, p 95
-276   2353256 1730-11-23 2353218 1730-10-16 38 AnHar, 1909, vol 55, p 95
-275   2353574 1731-10-07 2353550 1731-09-13 24 AnHar, 1909, vol 55, p 95
-268   2355880 1738-01-29 2355874 1738-01-23 6 AnHar, 1909, vol 55, p 95
-267   2356203 1738-12-18 2356206 1738-12-21 -3 AnHar, 1909, vol 55, p 95
-252   2361161 1752-07-15 2361185 1752-08-08 -24 AnHar, 1909, vol 55, p 95
-247   2362823 1757-02-01 2362845 1757-02-23 -22 AnHar, 1909, vol 55, p 95
-246   2363171 1758-01-15 2363177 1758-01-21 -6 AnHar, 1909, vol 55, p 95
-245   2363495 1758-12-05 2363509 1758-12-19 -14 AnHar, 1909, vol 55, p 95
-235   2366833 1768-01-25 2366828 1768-01-20 5 AnHar, 1909, vol 55, p 95
-234   2367174 1768-12-31 2367160 1768-12-17 14 AnHar, 1909, vol 55, p 95
-233   2367498 1769-11-20 2367492 1769-11-14 6 AnHar, 1909, vol 55, p 95
-232   2367820 1770-10-08 2367824 1770-10-12 -4 AnHar, 1909, vol 55, p 95
-222 1.9 2371124 1779-10-25 2371144 1779-11-14 -20 SVO
-221   2371470 1780-10-05 2371476 1780-10-11 -6 AnHar, 1909, vol 55, p 95
-219   2372141 1782-08-07 2372140 1782-08-06 1 AnHar, 1909, vol 55, p 95
-213   2374147 1788-02-03 2374132 1788-01-19 15 AnHar, 1909, vol 55, p 95
-212   2374477 1788-12-29 2374463 1788-12-15 14 AnHar, 1909, vol 55, p 95
-211   2374813 1789-11-30 2374795 1789-11-12 18 AnHar, 1909, vol 55, p 95
-210 3.1 2375130 1790-10-13 2375127 1790-10-10 3 SVO
-209   2375477 1791-09-25 2375459 1791-09-07 18 AnHar, 1909, vol 55, p 95
-203   2377465 1797-03-05 2377451 1797-02-19 14 AnHar, 1909, vol 55, p 95
-200   2378455 1799-11-20 2378447 1799-11-12 8 AnHar, 1909, vol 55, p 95
-199   2378797 1800-10-28 2378779 1800-10-10 18 AnHar, 1909, vol 55, p 95
-191   2381434 1808-01-17 2381435 1808-01-18 -1 AnHar, 1909, vol 55, p 95
-190   2381758 1808-12-06 2381767 1808-12-15 -9 AnHar, 1909, vol 55, p 95
-189   2382101 1809-11-14 2382099 1809-11-12 2 AnHar, 1909, vol 55, p 95
-188   2382428 1810-10-07 2382431 1810-10-10 -3 AnHar, 1909, vol 55, p 95
-187   2382776 1811-09-20 2382762 1811-09-06 14 AnHar, 1909, vol 55, p 95
-186   2383114 1812-08-23 2383094 1812-08-03 20 AnHar, 1909, vol 55, p 95
-180   2385074 1818-01-04 2385086 1818-01-16 -12 AnHar, 1909, vol 55, p 95
-179   2385408 1818-12-04 2385418 1818-12-14 -10 AnHar, 1909, vol 55, p 95
-178 3.6 2385742 1819-11-03 2385750 1819-11-11 -8 SVO
-177 3.2 2386067 1820-09-23 2386082 1820-10-08 -15 SVO
-160   2391676 1836-02-01 2391725 1836-03-21 -49 AnHar, 1909, vol 55, p 95
-159   2392007 1836-12-28 2392057 1837-02-16 -50 AnHar, 1909, vol 55, p 95
-156 2.6 2393023 1839-10-10 2393053 1839-11-09 -30 SVO
-155 3.6 2393369 1840-09-20 2393385 1840-10-06 -16 SVO
-154   2393709 1841-08-26 2393717 1841-09-03 -8 AnHar, 1909, vol 55, p 95
-153   2394044 1842-07-27 2394049 1842-08-01 -5 AnHar, 1909, vol 55, p 95
-150   2394989 1845-02-26 2395045 1845-04-23 -56 AnHar, 1909, vol 55, p 95
-149   2395331 1846-02-03 2395377 1846-03-21 -46 AnHar, 1909, vol 55, p 95
-148 2.7 2395652 1846-12-21 2395709 1847-02-16 -57 SVO
-147 4.3 2395981 1847-11-15 2396041 1848-01-14 -60 SVO
-146 3.3 2396318 1848-10-17 2396373 1848-12-11 -55 SVO
-145 4.2 2396660 1849-09-24 2396705 1849-11-08 -45 SVO
-144   2397010 1850-09-09 2397037 1850-10-06 -27 AnHar, 1909, vol 55, p 95
-143   2397326 1851-07-22 2397369 1851-09-03 -43 AnHar, 1909, vol 55, p 95
-139 3.2 2398653 1855-03-10 2398697 1855-04-23 -44 SVO
-138   2398983 1856-02-03 2399029 1856-03-20 -46 AnHar, 1909, vol 55, p 95
-137   2399340 1857-01-25 2399360 1857-02-14 -20 AnHar, 1909, vol 55, p 95
-136 2.9 2399667 1857-12-18 2399692 1858-01-12 -25 SVO
-135 3.6 2399990 1858-11-06 2400024 1858-12-10 -34 SVO
-134 3.0 2400328 1859-10-10 2400356 1859-11-07 -28 SVO
-133 2.8 2400657 1860-09-03 2400688 1860-10-04 -31 SVO
-132   2400990 1861-08-02 2401020 1861-09-01 -30 AnHar, 1909, vol 55, p 95
-131   2401324 1862-07-02 2401352 1862-07-30 -28 AnHar, 1909, vol 55, p 95
-129 2.9 2401989 1864-04-27 2402016 1864-05-24 -27 SVO
-128 3.8 2402315 1865-03-19 2402348 1865-04-21 -33 SVO
-127 2.8 2402647 1866-02-14 2402680 1866-03-19 -33 SVO
-126 5.1 2402980 1867-01-13 2403012 1867-02-14 -32 SVO
-125 3.1 2403306 1867-12-05 2403344 1868-01-12 -38 SVO
-124 5.1 2403639 1868-11-02 2403676 1868-12-09 -37 SVO
-123 4.0 2403967 1869-09-26 2404008 1869-11-06 -41 SVO
-122 3.3 2404301 1870-08-26 2404340 1870-10-04 -39 SVO
-121   2404634 1871-07-25 2404672 1871-09-01 -38 AnHar, 1909, vol 55, p 95
-120   2404967 1872-06-22 2405004 1872-07-29 -37 AnHar, 1909, vol 55, p 95
-119   2405304 1873-05-25 2405336 1873-06-26 -32 AnHar, 1909, vol 55, p 95
-117 2.8 2405968 1875-03-20 2406000 1875-04-21 -32 SVO
-116   2406297 1876-02-12 2406332 1876-03-18 -35 AnHar, 1909, vol 55, p 95
-115 3.1 2406640 1877-01-20 2406664 1877-02-13 -24 SVO
-114 3.5 2406966 1877-12-12 2406996 1878-01-11 -30 SVO
-113 2.9 2407284 1878-10-26 2407328 1878-12-09 -44 SVO
-112 4.1 2407615 1879-09-22 2407659 1879-11-05 -44 SVO
-111   2407919 1880-07-22 2407991 1880-10-02 -72 AnHar, 1909, vol 55, p 95
-110   2408260 1881-06-28 2408323 1881-08-30 -63 GuL, 1918, 1.1
-109   2408609 1882-06-12 2408655 1882-07-28 -46 GuL, 1918, 1.1
-107   2409242 1884-03-06 2409319 1884-05-22 -77 AnHar, 1909, vol 55, p 95
-106 3.4 2409579 1885-02-06 2409651 1885-04-19 -72 SVO
-105 4.9 2409912 1886-01-05 2409983 1886-03-17 -71 SVO
-104 4.3 2410243 1886-12-02 2410315 1887-02-12 -72 SVO
-103 4.5 2410578 1887-11-02 2410647 1888-01-10 -69 SVO
-102 3.1 2410899 1888-09-18 2410979 1888-12-07 -80 SVO
-101   2411235 1889-08-20 2411311 1889-11-04 -76 AnHar, 1909, vol 55, p 95
-98   2412240 1892-05-21 2412307 1892-07-27 -67 BHarO, 1930, no 872, p 28
-96   2412907 1894-03-19 2412971 1894-05-22 -64 AnHar, 1909, vol 55, p 95
-95 3.9 2413254 1895-03-01 2413303 1895-04-19 -49 SVO
-94 3.6 2413594 1896-02-04 2413635 1896-03-16 -41 SVO
-93 3.7 2413921 1896-12-27 2413967 1897-02-11 -46 SVO
-92 3.4 2414250 1897-11-21 2414299 1898-01-09 -49 SVO
-91 2.8 2414568 1898-10-05 2414631 1898-12-07 -63 SVO
-90 3.8 2414900 1899-09-02 2414963 1899-11-04 -63 SVO
-89   2415232 1900-07-31 2415295 1900-10-02 -63 AnHar, 1909, vol 55, p 95
-88   2415550 1901-06-14 2415627 1901-08-30 -77 BHarO, 1930, no 872, p 28
-87   2415888 1902-05-18 2415958 1902-07-27 -70 BHarO, 1930, no 872, p 28
-86   2416220 1903-04-15 2416290 1903-06-24 -70 BHarO, 1930, no 872, p 28
-85   2416545 1904-03-05 2416622 1904-05-21 -77 AnHar, 1909, vol 55, p 95
-84   2416895 1905-02-18 2416954 1905-04-18 -59 AnHar, 1909, vol 55, p 95
-83 4.3 2417226 1906-01-15 2417286 1906-03-16 -60 SVO
-82 2.5 2417559 1906-12-14 2417618 1907-02-11 -59 SVO
-81 3.9 2417889 1907-11-09 2417950 1908-01-09 -61 SVO
-80 3.5 2418222 1908-10-07 2418282 1908-12-06 -60 SVO
-79 3.2 2418549 1909-08-30 2418614 1909-11-03 -65 SVO
-78 3.3 2418870 1910-07-17 2418946 1910-10-01 -76 SVO
-77 3.5 2419219 1911-07-01 2419278 1911-08-29 -59 AAVSO
-76   2419553 1912-05-30 2419610 1912-07-26 -57 AAVSO
-75 3.1 2419872 1913-04-14 2419942 1913-06-23 -70 SVO
-74 3.4 2420202 1914-03-10 2420274 1914-05-21 -72 SVO
-73 3.7 2420532 1915-02-03 2420606 1915-04-18 -74 SVO
-72 3.2 2420859 1915-12-27 2420938 1916-03-15 -79 SVO
-71 3.3 2421188 1916-11-20 2421270 1917-02-10 -82 SVO
-70 3.1 2421516 1917-10-14 2421602 1918-01-08 -86 SVO
-69 3.5 2421850 1918-09-13 2421934 1918-12-06 -84 SVO
-68 3.4 2422175 1919-08-04 2422266 1919-11-03 -91 SVO
-67 3.2 2422510 1920-07-04 2422598 1920-09-30 -88 AAVSO
-66   2422824 1921-05-14 2422930 1921-08-28 -106 AAVSO
-65 3.8 2423174 1922-04-29 2423262 1922-07-26 -88 SVO
-64 2.9 2423488 1923-03-09 2423594 1923-06-23 -106 SVO
-63 4.7 2423822 1924-02-06 2423926 1924-05-20 -104 SVO
-62 3.8 2424156 1925-01-05 2424257 1925-04-16 -101 SVO
-61 3.3 2424484 1925-11-29 2424589 1926-03-14 -105 SVO
-60 3.3 2424810 1926-10-21 2424921 1927-02-09 -111 SVO
-59 4.0 2425149 1927-09-25 2425253 1928-01-07 -104 SVO
-58 3.1 2425479 1928-08-20 2425585 1928-12-04 -106 SVO
-57 4.6 2425813 1929-07-20 2425917 1929-11-01 -104 SVO
-56 3.7 2426144 1930-06-16 2426249 1930-09-29 -105 SVO
-55 3.9 2426474 1931-05-12 2426581 1931-08-27 -107 SVO
-54 3.8 2426814 1932-04-16 2426913 1932-07-24 -99 SVO
-53 3.8 2427145 1933-03-13 2427245 1933-06-21 -100 SVO
-52 3.9 2427474 1934-02-05 2427577 1934-05-19 -103 SVO
-51 3.1 2427805 1935-01-02 2427909 1935-04-16 -104 SVO
-50 4.2 2428150 1935-12-13 2428241 1936-03-13 -91 SVO
-49 3.0 2428483 1936-11-10 2428573 1937-02-08 -90 SVO
-48 4.4 2428826 1937-10-19 2428905 1938-01-06 -79 SVO
-47 3.9 2429155 1938-09-13 2429237 1938-12-04 -82 SVO
-46 3.2 2429483 1939-08-07 2429569 1939-11-01 -86 SVO
-45 3.6 2429823 1940-07-12 2429901 1940-09-28 -78 SVO
-44 3.6 2430166 1941-06-20 2430233 1941-08-26 -67 AAVSO
-43 3.5 2430491 1942-05-11 2430565 1942-07-24 -74 SVO
-42 3.1 2430815 1943-03-31 2430897 1943-06-21 -82 SVO
-41 4.1 2431154 1944-03-04 2431229 1944-05-18 -75 SVO
-40 3.0 2431480 1945-01-24 2431561 1945-04-15 -81 SVO
-39 4.0 2431822 1946-01-01 2431893 1946-03-13 -71 SVO
-38 3.9 2432154 1946-11-29 2432225 1947-02-08 -71 SVO
-37 2.9 2432480 1947-10-21 2432556 1948-01-05 -76 SVO
-36 3.6 2432819 1948-09-24 2432888 1948-12-02 -69 SVO
-35 3.2 2433152 1949-08-23 2433220 1949-10-30 -68 SVO
-34 3.7 2433484 1950-07-21 2433552 1950-09-27 -68 SVO
-33 3.4 2433809 1951-06-11 2433884 1951-08-25 -75 SVO
-32 3.2 2434155 1952-05-22 2434216 1952-07-22 -61 SVO
-31 3.4 2434488 1953-04-20 2434548 1953-06-19 -60 SVO
-30 3.4 2434821 1954-03-19 2434880 1954-05-17 -59 SVO
-29 3.8 2435148 1955-02-09 2435212 1955-04-14 -64 SVO
-28 3.6 2435484 1956-01-11 2435544 1956-03-11 -60 SVO
-27 4.0 2435810 1956-12-02 2435876 1957-02-06 -66 SVO
-26 3.2 2436140 1957-10-28 2436208 1958-01-04 -68 SVO
-25 3.5 2436472 1958-09-25 2436540 1958-12-02 -68 SVO
-24 3.2 2436801 1959-08-20 2436872 1959-10-30 -71 SVO
-23 3.1 2437134 1960-07-18 2437204 1960-09-26 -70 SVO
-22 3.0 2437469 1961-06-18 2437536 1961-08-24 -67 SVO
-21 3.9 2437800 1962-05-15 2437868 1962-07-22 -68 SVO
-20 3.4 2438134 1963-04-14 2438200 1963-06-19 -66 SVO
-19 3.1 2438463 1964-03-08 2438532 1964-05-16 -69 SVO
-18 3.2 2438796 1965-02-04 2438864 1965-04-13 -68 SVO
-17 3.4 2439131 1966-01-05 2439196 1966-03-11 -65 SVO
-16 3.7 2439463 1966-12-03 2439528 1967-02-06 -65 SVO
-15 3.2 2439802 1967-11-07 2439860 1968-01-04 -58 SVO
-14 3.7 2440127 1968-09-27 2440192 1968-12-01 -65 SVO
-13 3.0 2440464 1969-08-30 2440524 1969-10-29 -60 SVO
-12 4.1 2440809 1970-08-10 2440855 1970-09-25 -46 SVO
-11 3.8 2441154 1971-07-21 2441187 1971-08-23 -33 SVO
-10 3.5 2441492 1972-06-23 2441519 1972-07-20 -27 SVO
-9   2441828 1973-05-25 2441851 1973-06-17 -23 AAVSO
-8 3.0 2442146 1974-04-08 2442183 1974-05-15 -37 SVO
-7 3.4 2442486 1975-03-14 2442515 1975-04-12 -29 SVO
-6 4.5 2442829 1976-02-20 2442847 1976-03-09 -18 SVO
-5 3.3 2443154 1977-01-10 2443179 1977-02-04 -25 SVO
-4 2.7 2443489 1977-12-11 2443511 1978-01-02 -22 SVO
-3 4.4 2443841 1978-11-28 2443843 1978-11-30 -2 SVO
-2 3.7 2444175 1979-10-28 2444175 1979-10-28 0 SVO
-1 3.5 2444511 1980-09-28 2444507 1980-09-24 4 SVO
0 3.9 2444843 1981-08-26 2444839 1981-08-22 4 SVO
1 2.6 2445180 1982-07-29 2445171 1982-07-20 9 AAVSO
2 3.8 2445514 1983-06-28 2445503 1983-06-17 11 AAVSO
3 4.2 2445842 1984-05-21 2445835 1984-05-14 7 AAVSO
4 3.3 2446181 1985-04-25 2446167 1985-04-11 14 SVO
5 3.6 2446510 1986-03-20 2446499 1986-03-09 11 SVO
6 3.1 2446840 1987-02-13 2446831 1987-02-04 9 SVO
7 4.2 2447175 1988-01-14 2447163 1988-01-02 12 SVO
8 3.4 2447497 1988-12-01 2447495 1988-11-29 2 SVO
9 3.2 2447826 1989-10-26 2447827 1989-10-27 -1 SVO
10 3.5 2448168 1990-10-03 2448159 1990-09-24 9 SVO
11 3.4 2448500 1991-08-31 2448491 1991-08-22 9 SVO
12 2.6 2448825 1992-07-21 2448823 1992-07-19 2 SVO
13 3.7 2449166 1993-06-27 2449154 1993-06-15 12 SVO
14 3.5 2449498 1994-05-25 2449486 1994-05-13 12 SVO
15 3.4 2449831 1995-04-23 2449818 1995-04-10 13 SVO
16 3.5 2450165 1996-03-22 2450150 1996-03-07 15 SVO
17 2.7 2450488 1997-02-08 2450482 1997-02-02 6 SVO
18 3.8 2450826 1998-01-12 2450814 1997-12-31 12 SVO
19 4.5 2451164 1998-12-16 2451146 1998-11-28 18 SVO
20 3.3 2451499 1999-11-16 2451478 1999-10-26 21 SVO
21 3.6 2451825 2000-10-07 2451810 2000-09-22 15 SVO
22 3.1 2452166 2001-09-13 2452142 2001-08-20 24 SVO
23 3.1 2452494 2002-08-07 2452474 2002-07-18 20 SVO
24 3.6 2452837 2003-07-16 2452806 2003-06-15 31 SVO
25 3.4 2453174 2004-06-17 2453138 2004-05-12 36 SVO
26 3.6 2453510 2005-05-19 2453470 2005-04-09 40 SVO
27 3.6 2453841 2006-04-15 2453802 2006-03-07 39 SVO
28 2.9 2454156 2007-02-24 2454134 2007-02-02 22 SVO
29 3.9 2454495 2008-01-29 2454466 2007-12-31 29 SVO
30 3.7 2454831 2008-12-30 2454798 2008-11-27 33 SVO
31 3.5 2455165 2009-11-29 2455130 2009-10-25 35 SVO
32 3.2 2455498 2010-10-28 2455462 2010-09-22 36 SVO
33 2.9 2455819 2011-09-14 2455794 2011-08-20 25 SVO
34 3.5 2456158 2012-08-18 2456126 2012-07-17 32 SVO
35 3.0 2456487 2013-07-13 2456458 2013-06-14 29 SVO
36 3.5 2456818 2014-06-09 2456790 2014-05-12 28 SVO
37 3.5 2457154 2015-05-11 2457122 2015-04-09 32 SVO
38 3.5 2457472 2016-03-24 2457453 2016-03-05 19 SVO
39 3.7 2457809 2017-02-24 2457785 2017-01-31 24 SVO
40 3.4 2458140 2018-01-21 2458117 2017-12-29 23 SVO
41 3.9 2458466 2018-12-13 2458449 2018-11-26 17 SVO
42 3.0 2458788 2019-10-31 2458781 2019-10-24 7 SVO
43 3.3 2459122 2020-09-29 2459113 2020-09-20 9 SVO
44 2.8 2459433 2021-08-06 2459445 2021-08-18 -12 SVO
45 3.4 2459772 2022-07-11 2459777 2022-07-16 -5 SVO


E Cycle number from the GCVS4 epoch.
Mag Magnitude at maximum.
O (JD) Julian date at observed time for maximum.
O (Dat) Same as above, expressed as date.
C (JD) Julian date at calculated time for maximum with elements from GCVS4.
C (Dat) Same as above, expressed as date.
O-C O (JD) minus C (JD).
Sorce Datasource for the maxima.