The d3.utcTuesdays() function in D3.js is used to return all the dates based on Tuesday in the given range of start and end date in Coordinated Universal Time (UTC).
Syntax:
d3.utcTuesdays(start, end, step);
Parameters: This function accept three parameters which are given below:
- Start: This is the given start date.
 - end: This is the given end date.
 - step: This is the optional value used to skip dates.
 
Return Value: This function returns all the dates based on Tuesday.
Below programs illustrate the d3.utcTuesdays() function in D3.js:
Example 1: 
<!DOCTYPE html> <html>   <head>     <title>         D3.js | d3.utcTuesdays() Function     </title>           <script src=     </script> </head>   <body>     <script>               // Initialising start and end date         var start = new Date(2015, 07, 01);         var end = new Date(2015, 07, 30);           // Calling the utcTuesdays() function         // without step value         var a = d3.utcTuesdays(start, end);           // Getting the Tuesday dates         console.log(a);     </script> </body>   </html>      | 
Output:
[“2015-08-04T00:00:00.000Z”, “2015-08-11T00:00:00.000Z”, “2015-08-18T00:00:00.000Z”, “2015-08-25T00:00:00.000Z”]
Example 2:
<!DOCTYPE html> <html>   <head>     <title>         D3.js | d3.utcTuesdays() Function     </title>           <script src=     </script> </head>   <body>     <script>               // Initialising start and end date         var start = new Date(2015, 07, 01);         var end = new Date(2015, 07, 30);            // Calling the utcTuesdays() function         // with step value         var a = d3.utcTuesdays(start, end, 2);            // Getting the Tuesday dates         console.log(a);     </script> </body>   </html>      | 
Output:
["2015-08-04T00:00:00.000Z", "2015-08-18T00:00:00.000Z"]
