A SMALL TABLE TO Find the day of the Month for ever.  
Which may be graven upon a piece of Coin, the case of a Watch, a Tobaccho-box, or any such like.  
Very useful for men of all sorts and qualities, to carry about them.  
Invented, and at first intended only for private use, By W. Potter.  
The Table 
 of months. 5 7 4 12 6 3 11 2 10 0 9.1 0 0 8 The Table 
 of Days. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 00 00 00 00  
London, Printed by T. W. for R. E. are to b sold at the seven Stars near the North door of Paul's Church. 1655.   

A small Table to find the day of the month for ever.  
THough the Table hereafter expressed is no Invention worthy the owning in Print, and is now above ten years since communicated to divers of my friends, and by them, to many whose faces I never saw, yet having been of late much pressed by several of my acquaintance, to publish a word or two in relation to the use thereof, I thought fit to yield thereunto so far as to show how the day of the Month for any year to come (being the principal end for which it was Invented) might be discovered thereby.  
YOU may observe, that the two uppermost lines in this Table are divided from the rest by a double stroke, and do serve to express the Months, according The Table of 
 Months. 5 7 4 12 6 3 11 2 10 0 9.1 0 0 8 The Table 
 of Days. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 00 00 00 00 to their Numeral order; for March being the first Month (the Sun then entering Aries) is expressed by the figure. 1. April, the 2. Month, by the figure 2. according to which order, September is the 7. October the 8. November the 9 and December the tenth Month, as their names do signify; and are expressed in the aforesaid Table by their correspondent numbers.  
Thus you have in the first Column towards the left hand, the fift and the second Month, in the second Column the seventh and the tenth Month, in the third Column the fourth Month, in the fourth Column the twelfth, ninth and first Month (for note, that the figures 9 and 1. though they both stand in one square, signify two Months, viz. both November and March) in the fift Column you have the sixth Month, that is August, and so of the rest.  
The figures below the said double line do signify days, as hereafter doth appear.  
To find the day of the Month at any time, observe that those days which stand right under any Month are always the first days of the week, (commonly called Sundays) for this present year 1655.  
Thus if you look for March, (which is the first Month,) you shall find it in the fourth Column, and right underneath the same, you shall find the figures, 4. 11. 18. 25. All which show that the fourth of March this year, is Sunday, and also the 11. 18. and 25. So you shall find April, which is the second Month in the first Column towards the left hand, and underneath the same, 1. 8. 15. etc. and August which is the sixth Month in the fift Column, and underneath the same 5. 12. 19 etc. All which days being right under their respective Months) are Sundays.  
Now when you would find the day of the Month by the aforesaid Table, you must Consider as in the Case of the common Almanacs, what Month and what day of the week it is; And than you must enter the Table for that Month and underneath the same you have (I say) the Column of Sundays, the next after which is the Column of Mondays, and the next after that of Tuesdays; and so you must pass from one Column to another, till you come to that Column which Answers to the present day of the week; where according as the Month is near the beginning, middle, or ending thereof, you will find your desire; as for example,  
It is the third day of the week, and the beginning of August in this year 1655. I would know what day of the Month it is?  
Answ. Entering the Table of Months, I find August, which is the sixth Month, in the fift Column, and right underneath the same 5. 12. 19 26, these are the first days of the week for that Month. The next Column therefore towards the right hand (viz. 6. 13. etc.) are the second days of the week; and the next beyond that, viz. 7. 14. etc. are the third days of the week which are the days I seek for. Being therefore now about the beginning of August, and the third day of the week, I Conclude thereupon that it is the 7. day of the Month.  
It is now about the later end of June, which is the fourth Month, and the fourth day of the week, in the aforesaid year, I desire to know what day of the Month it is?  
Answ. I find June in the third Column, which third Column being ●he first days of the week in that Month, I pass from thence to the next Column, for the second days of the week, and to the next for the third days of the week, and to the next beyond that for the fourth, where I find 6. 13. 20. 27. whereby I conclude, it is now the 27. day of the Month.  
So for May (which is the third Month,) you shall find it in the sixth Column, whereby you may perceive that the first days of the week are 6. 13. 20. 27. the 2d. days of the week 7. 14. 21. etc. the third days of the week 1. 8. 15. etc. (according as you find them in the first Column towards the left hand) the fourth days of the week 2. 9 16. etc.  
Thus also if for speed, you desire to account backwards, as (suppose) in November, (which is found in the fourth Column,) and underneath the same 4. 11. 18. etc. which are the first days of the week, therefore going backwards towards the left hand 3. 10. 17. are the seventh days of the week for that Month; and 2. 9 16. etc. are the sixth days of the week; and 1. 8. 15. the 5. days of the week, for that Month.  
You must further observe, that several years answer to several days of the week; So that as this year, answers to the first day of the Week, so there are other years that Answer to the 2. to the 3. to the fourth, and so on; (which those others are, I shall show immediately.  
Now as in this year, that answers to the first days, all the days right under each Month are the first days of the Week for that Month; so in a year that answers to the third day of the Week, all the days under each Month, are the third days of the Week in that Month, and the days in the Column next following are the fourth days, and next following that the fift days of the Week, etc. and the days next going before those right underneath the said Month, are the second days of the Week, and those next before them the first days, etc.  
As for example, suppose it were June, which is the fourth Month in a year, that answers to the third day of the Week, viz. Tuesday: I enter the table and find June in the third Column; and the days right underneth it, are 3. 10. 17. which therefore are all Tuesdays, the days following in the next Column are 4. 11. 18. etc. which therefore are all Wednesdays, and the days following in the next Column, 5. 12. 19 which are all Thursdays, etc. So if I go backwards, the days next before the said 3. 10. 17. which are I say, Tuesdays, are 2. 9 16. which are Monday's, and those next before them. 1. 8. 15. which are Sundays, and those next before them 7. 14. 21. which are saturdays.  
So if the year should answer to the 5. day of the week, which is Thursday, then in this fourth Month, viz. June, the figures underneath the same being 3. 10. 17. are all Thursdays; and those next following 4. 11. 18. Fridays, those next before, viz. 2. 9 16. Wednesdays.  
That you may know what day of the week answers to every year; Note that if the present year answer (suppose) to the 5. day of the week, than (except in the case of leap year) the next year answers to the sixth day of the week, the next to the seventh, the next to the first, the next to the second, and so on in order to the end of the World.  
Note further, that every leap year hath two days belonging to it, whereof one continues all January and February, and the other, all the rest of the Months, and then for the 3. years following the same day continues (as is said) from one new years day to another: Where note that the alteration for all years, (except leap year,) gins at new years' day, and not in March.  
Thus this year 1655. reckoned from New-years-day, which was in 1654. till the next New-years-day, answers I say, to the first day of the Week, and the next year being leap year, all January and February, answers to the second day of the week, and the rest of the Months till New-years-day, to the third day of the Week; and all the year following that, to the fourth; all the year next following to the fift, the next year to the sixth, and then the next year being leap year again (for every fourth year is leap year) January and February therein answer to the 7. day of the week, And the Months following till New-years-day to the first day of the week; and so the 3. years following to the second, the third and the fourth days of the week; and so for ever according to this Table following,  
years' days 1655 1 1656 2 1656 3 1657 4 1658 5 1659. 6 1660 7 1660 1 1661. 2 1662. 3 1663. 4 1664 5 1664 6 1665 7 1666 1 1667 2 1668 3 1668 4 1669 5 1670 6 1671 7 1672 1 1672 2 1673 3  
I shall clear the meaning of this Table by one Instance or two.  
I desire to know what day of the week answers to the year 1661.  
Answ. I enter the Table, and find, that year, and against the same, the figure 2. which showeth, that the second day of the week answers to that year.  
Again, I desire to know what day of the week answers to the year 1660.  
Answ. I enter the Table, and find that year twice expressed, and against it I find first the figure 7. and next the figure 1. So that I conclude it is a leap year; and that the first part of the year viz. the Month, of January and February answer to the 7. day of the week; and that the rest of the months' answers to the first days of the Week.  
Now though I have expressed all this in a Table, to show the Orderly Succession thereof, yet it will be no burden to any man's memory to carry one day in his mind for a whole year together; and two days at the most in the case of leap year, or (knowing what day answers to the present year) to reckon without a Table what day answers to the succeeding years, observing the orderly succession thereof, as it is here expressed; which might in like manner be continued to any number of years required.  
FINIS.