{"query":"2004-01-31","date":"2004-01-31","year":2004,"month":1,"day":31,"weekday":"Saturday","weekdayNumber":6,"isLeapYear":true,"dayOfYear":31,"daysInYear":366,"isoWeek":5,"isoWeekYear":2004,"doomsday":{"anchorDayNumber":2,"anchorDay":"Tuesday","div12":0,"mod12":4,"div4":1,"doomsdayNumber":0,"doomsdayName":"Sunday","doomsdayInMonth":4,"doomsdayDate":"2004-01-04","distanceToDoomsday":27},"onThisDay":[{"date":"1958-01-31","title":"Explorer 1, the first US satellite, is launched"},{"date":"2020-01-31","title":"The United Kingdom formally leaves the European Union"}],"url":"https://whattheday.com/2004-01-31","api":"https://whattheday.com/api/weekday?date=2004-01-31"}