Formula: (c is Century)
anchor = 5*(c%4)+2; //(Gregorian Calendar)
calc
Table:

1500	1600	1700	1800
1900	2000	2100	2200
2300	2400	2500	2600
3	2	0	5

Formula: (doomsday = year % 100)
doomsday += doomsday%2==1 ? 11 : 0;
doomsday /= 2;
doomsday += doomsday%2==1 ? 11 : 0;
doomsday = 7 - doomsday%7;

table: *Leap Year

Jan	03/01	10/01	17/01	24/01	31/01
Jan*	04/01	11/01	18/01	25/01
Feb		07/02	14/02	21/02	28/02
Feb*	01/02	08/02	15/02	22/02	29/02
Mars	07/03	14/03	21/03	28/03
Apr	04/04	11/04	18/04	25/04
May	02/05	09/05	16/05	23/05	30/05
June	06/06	13/06	20/06	27/06
Jul	04/07	11/07	18/07	25/07
Aug	01/08	08/08	15/08	25/08
Sep	05/09	12/09	19/09	26/09
Oct	03/10	10/10	17/10	24/10	31/10
Nov	07/11	14/11	21/11	28/11
Dec	05/12	12/12	19/12	26/12