You should get that in a minute.
For dates in the 20th century add 5 before dividing by 7.
For leap years make the ratio for January and February one less than in the table.
Try this for the Presidents
| Washington | Jackson |
| Adams | Adams |
| Jefferson | Monroe |
| Madison | |
W A J - M - M A J
| Van Buren and Harrison | |||
| Tyler | Polk | and | Taylor |
| Fillmore | Pierce | Buchanan | |
| Lincoln | Johnson | Grant | |
| Hayes | Garfield | and | Arthur |
| Cleveland | Harrison | Cleveland | |
| McKinley and Roosevelt | |||
Read across the page. Begin with the seven large initials, they will soon impress on the mind, then get the names they stand for. Then simply remember Van Buren and Harrison, the remainder in the form given across the page have a sort of a sing song that soon grows fast.
Incidentally learn the given names.
When we look at the watch we must make a mental calculation to state the time. I heard of a watch that had three circular openings in the front case, one on each side and one on the bottom; the latter showed the second hand. The one on the left showed the hour, and on the right the number of minutes past the hour were shown. If it were twenty minutes past ten we would see ten and twenty. There was no mental calculation required.