When even i click on particular day of all shifts it has it highlish the all shifts in that day

i have created a page using html css and javascript. in this page i am showing like shift information for week.

i had options like 4AM 8AM 1PM 6PM and show all shifts.

when user click on all shifts it has to highlisht the allshift in that particular day but here i am facing issue like when i click on Monday all shifts it is highliting but after when i click on tuesday it highliting both Monday and Tuesday.

My requirement is when i click on particular day that one only has to higlight.

Please find my Code and images below.

<div class="row">
              <div class="col-2"></div>
              <div class="col-2">
                <p>
                  Early shifts<br /><span class="text-primary"
                    >starting at 4AM +</span
                  >
                </p>
              </div>
              <div class="col-2">
                <p>
                  Day shifts<br /><span class="text-primary"
                    >starting at 8AM +</span
                  >
                </p>
              </div>
              <div class="col-2">
                <p>
                  Afternoon shifts<br /><span class="text-primary"
                    >starting at 1PM +</span
                  >
                </p>
              </div>
              <div class="col-2">
                <p>
                  Night shifts<br /><span class="text-primary"
                    >starting at 6PM +</span
                  >
                </p>
              </div>
              <div class="col-2">
                <p>
                  All day<br /><span class="text-primary"
                    >show me all shifts</span
                  >
                </p>
              </div>
            </div>
            <div class="row">
              <div class="col-2">
                <p>Mon</p>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-brightness-alt-low"
                  style="font-size: 2rem"
                  id="mon-4am"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-brightness-alt-high"
                  style="font-size: 2rem"
                  id="mon-8am"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-brightness-high"
                  style="font-size: 1.5rem"
                  id="mon-1pm"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-moon"
                  style="font-size: 1.35rem"
                  id="mon-6pm"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-arrow-clockwise"
                  style="font-size: 1.65rem"
                  id="mon"
                  onclick="changeBG(this.id)"
                ></i>
              </div>
            </div>
            <div class="row">
              <div class="col-2">
                <p>Tue</p>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-brightness-alt-low"
                  style="font-size: 2rem"
                  id="tue-4am"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-brightness-alt-high"
                  style="font-size: 2rem"
                  id="tue-8am"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-brightness-high"
                  style="font-size: 1.5rem"
                  id="tue-1pm"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-moon"
                  style="font-size: 1.35rem"
                  id="tue-6pm"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-arrow-clockwise"
                  style="font-size: 1.65rem"
                  id="tue"
                  onclick="changeBG(this.id)"
                ></i>
              </div>
            </div>
            <div class="row">
              <div class="col-2">
                <p>Wed</p>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-brightness-alt-low"
                  style="font-size: 2rem"
                  id="wed-4am"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-brightness-alt-high"
                  style="font-size: 2rem"
                  id="wed-8am"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-brightness-high"
                  style="font-size: 1.5rem"
                  id="wed-1pm"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-moon"
                  style="font-size: 1.35rem"
                  id="wed-6pm"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-arrow-clockwise"
                  style="font-size: 1.65rem"
                  id="wed"
                  onclick="changeBG(this.id)"
                ></i>
              </div>
            </div>
            <div class="row">
              <div class="col-2">
                <p>Thu</p>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-brightness-alt-low"
                  style="font-size: 2rem"
                  id="thu-4am"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-brightness-alt-high"
                  style="font-size: 2rem"
                  id="thu-8am"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-brightness-high"
                  style="font-size: 1.5rem"
                  id="thu-1pm"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-moon"
                  style="font-size: 1.35rem"
                  id="thu-6pm"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-arrow-clockwise"
                  style="font-size: 1.65rem"
                  id="thu"
                  onclick="changeBG(this.id)"
                ></i>
              </div>
            </div>
            <div class="row">
              <div class="col-2">
                <p>Fri</p>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-brightness-alt-low"
                  style="font-size: 2rem"
                  id="fri-4am"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-brightness-alt-high"
                  style="font-size: 2rem"
                  id="fri-8am"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-brightness-high"
                  style="font-size: 1.5rem"
                  id="fri-1pm"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-moon"
                  style="font-size: 1.35rem"
                  id="fri-6pm"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-arrow-clockwise"
                  style="font-size: 1.65rem"
                  id="fri"
                  onclick="changeBG(this.id)"
                ></i>
              </div>
            </div>
            <div class="row">
              <div class="col-2">
                <p>Sat</p>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-brightness-alt-low"
                  style="font-size: 2rem"
                  id="sat-4am"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-brightness-alt-high"
                  style="font-size: 2rem"
                  id="sat-8am"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-brightness-high"
                  style="font-size: 1.5rem"
                  id="sat-1pm"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-moon"
                  style="font-size: 1.35rem"
                  id="sat-6pm"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-arrow-clockwise"
                  style="font-size: 1.65rem"
                  id="sat"
                  onclick="changeBG(this.id)"
                ></i>
              </div>
            </div>
            <div class="row">
              <div class="col-2">
                <p>Sun</p>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-brightness-alt-low"
                  style="font-size: 2rem"
                  id="sun-4am"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-brightness-alt-high"
                  style="font-size: 2rem"
                  id="sun-8am"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-brightness-high"
                  style="font-size: 1.5rem"
                  id="sun-1pm"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-moon"
                  style="font-size: 1.35rem"
                  id="sun-6pm"
                ></i>
              </div>
              <div class="col-2 text-center">
                <i
                  class="bi bi-arrow-clockwise"
                  style="font-size: 1.65rem"
                  id="sun"
                  onclick="changeBG(this.id)"
                ></i>
              </div>
            </div>

Javascript code is

function changeBG(id) {
    function returnId(id) {
      return id;
    }
    const elementId = returnId(id);
    // console.log(elementId);
    var mon4am = document.getElementById(`${elementId}-4am`);
    var mon8am = document.getElementById(`${elementId}-8am`);
    var mon1pm = document.getElementById(`${elementId}-1pm`);
    var mon6pm = document.getElementById(`${elementId}-6pm`);
    // monBlock.style.backgroundColor = "red";
    mon4am.style.color = "#DEC20B";
    mon8am.style.color = "blue";
    mon1pm.style.color = "green";
    mon6pm.style.color = "red";
  }

Please find the below images

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