12 constexpr double kMilliSecondsInADay = 1000 * 60 * 60 * 24;  variable
23       {-400 * kMilliSecondsInADay, 1968},  in TEST()
27       {364.9 * kMilliSecondsInADay, 1970},  in TEST()
28       {365.0 * kMilliSecondsInADay, 1971},  in TEST()
29       {365.1 * kMilliSecondsInADay, 1971},  in TEST()
30       {2 * 365.0 * kMilliSecondsInADay, 1972},  in TEST()
32       {3 * 365.0 * kMilliSecondsInADay, 1972},  in TEST()
33       {(3 * 365.0 + 1) * kMilliSecondsInADay, 1973},  in TEST()
47       {-400 * kMilliSecondsInADay, 10},  in TEST()
51       {364.9 * kMilliSecondsInADay, 11},  in TEST()
52       {365.0 * kMilliSecondsInADay, 0},  in TEST()
53       {365.1 * kMilliSecondsInADay, 0},  in TEST()
55       {2 * 365.0 * kMilliSecondsInADay, 0},  in TEST()
56       {3 * 365.0 * kMilliSecondsInADay, 11},  in TEST()
57       {(3 * 365.0 + 1) * kMilliSecondsInADay, 0},  in TEST()
59       {30 * kMilliSecondsInADay, 0},  in TEST()
60       {31 * kMilliSecondsInADay, 1},  in TEST()
61       {58 * kMilliSecondsInADay, 1},  in TEST()
62       {59 * kMilliSecondsInADay, 2},  in TEST()
63       {89 * kMilliSecondsInADay, 2},  in TEST()
64       {90 * kMilliSecondsInADay, 3},  in TEST()
65       {119 * kMilliSecondsInADay, 3},  in TEST()
66       {120 * kMilliSecondsInADay, 4},  in TEST()
67       {150 * kMilliSecondsInADay, 4},  in TEST()
68       {151 * kMilliSecondsInADay, 5},  in TEST()
69       {180 * kMilliSecondsInADay, 5},  in TEST()
70       {181 * kMilliSecondsInADay, 6},  in TEST()
71       {211 * kMilliSecondsInADay, 6},  in TEST()
72       {212 * kMilliSecondsInADay, 7},  in TEST()
73       {242 * kMilliSecondsInADay, 7},  in TEST()
74       {243 * kMilliSecondsInADay, 8},  in TEST()
75       {272 * kMilliSecondsInADay, 8},  in TEST()
76       {273 * kMilliSecondsInADay, 9},  in TEST()
77       {303 * kMilliSecondsInADay, 9},  in TEST()
78       {304 * kMilliSecondsInADay, 10},  in TEST()
79       {333 * kMilliSecondsInADay, 10},  in TEST()
80       {334 * kMilliSecondsInADay, 11},  in TEST()
81       {364 * kMilliSecondsInADay, 11},  in TEST()
83       {(2 * 365.0 + 30) * kMilliSecondsInADay, 0},  in TEST()
84       {(2 * 365.0 + 31) * kMilliSecondsInADay, 1},  in TEST()
85       {(2 * 365.0 + 59) * kMilliSecondsInADay, 1},  in TEST()
86       {(2 * 365.0 + 60) * kMilliSecondsInADay, 2},  in TEST()
87       {(2 * 365.0 + 90) * kMilliSecondsInADay, 2},  in TEST()
88       {(2 * 365.0 + 91) * kMilliSecondsInADay, 3},  in TEST()
89       {(2 * 365.0 + 120) * kMilliSecondsInADay, 3},  in TEST()
90       {(2 * 365.0 + 121) * kMilliSecondsInADay, 4},  in TEST()
91       {(2 * 365.0 + 151) * kMilliSecondsInADay, 4},  in TEST()
92       {(2 * 365.0 + 152) * kMilliSecondsInADay, 5},  in TEST()
93       {(2 * 365.0 + 181) * kMilliSecondsInADay, 5},  in TEST()
94       {(2 * 365.0 + 182) * kMilliSecondsInADay, 6},  in TEST()
95       {(2 * 365.0 + 212) * kMilliSecondsInADay, 6},  in TEST()
96       {(2 * 365.0 + 213) * kMilliSecondsInADay, 7},  in TEST()
97       {(2 * 365.0 + 243) * kMilliSecondsInADay, 7},  in TEST()
98       {(2 * 365.0 + 244) * kMilliSecondsInADay, 8},  in TEST()
99       {(2 * 365.0 + 273) * kMilliSecondsInADay, 8},  in TEST()
100       {(2 * 365.0 + 274) * kMilliSecondsInADay, 9},  in TEST()
101       {(2 * 365.0 + 304) * kMilliSecondsInADay, 9},  in TEST()
102       {(2 * 365.0 + 305) * kMilliSecondsInADay, 10},  in TEST()
103       {(2 * 365.0 + 334) * kMilliSecondsInADay, 10},  in TEST()
104       {(2 * 365.0 + 335) * kMilliSecondsInADay, 11},  in TEST()