Because of the above-mentioned reasons, there is an approximately one-month difference between a date according to the Gregorian calendar and the equivalent date according to the Tenpo calendar (actually, the difference between the dates varies from year to year and this degree of variation is also approximately one month).
前述の理由で、グレゴリオ暦と天保暦との日付の差は平均してほぼ1か月である（ただし、実際には日付の差は年によって増減し、その変動幅も約1か月ある）。