Tags: #instructions
# Determining the Day of the Week for Any Date
**This method only works for the year 1753 or after.**
## Memorize This Table
| <!-- --> | <!-- --> |
| --------- | -------- |
| January | 1 |
| February | 4 |
| March | 4 |
| April | 0 |
| May | 2 |
| June | 5 |
| July | 0 |
| August | 3 |
| September | 6 |
| October | 1 |
| November | 4 |
| December | 6 |
Some additional ways of putting it:
- 1, 4, 4, 0, 2, 5, 0, 3, 6, 1, 4, 6.
- 144, 025, 036, 146
- Gross, quarter, 36, 1-46
## Use This Formula
```
(YD+floor(YD/4)+C+(MC+L)+D) % 7
```
- YD = Year Digits - the last two digits of the Year.
- C = Century Modifier
- 1753-1799 = +4
- 1800-1899 = +2
- 1900-1999 = 0
- 2000-2099 = -1
- MC = the number code for the month (memorized above)
- L = Leap Modifier
- 0, or -1 if Jan/Feb and year is divisible by 4
- D = the day of the month
## Map Result to Day
| <!-- --> | <!-- --> |
| --------- | -------- |
| Saturday | 0 |
| Sunday | 1 |
| Monday | 2 |
| Tuesday | 3 |
| Wednesday | 4 |
| Thursday | 5 |
| Friday | 6 |