User contributions
- 08:55, 30 December 2017 (diff | hist) . . (0) . . m 1935: 2018
- 08:52, 30 December 2017 (diff | hist) . . (+1) . . m 1935: 2018
- 08:50, 30 December 2017 (diff | hist) . . (-65) . . 1935: 2018
- 08:27, 30 December 2017 (diff | hist) . . (+14) . . 1935: 2018
- 08:21, 30 December 2017 (diff | hist) . . (+185) . . 1935: 2018 (Clarify that no factorization is needed to determine the leap year, since the factor (4) is already known.)