diff --git a/src/app/features/tasks/dialog-add-task-reminder/dialog-add-task-reminder.component.html b/src/app/features/tasks/dialog-add-task-reminder/dialog-add-task-reminder.component.html
index 062de47e95..c2081a5681 100644
--- a/src/app/features/tasks/dialog-add-task-reminder/dialog-add-task-reminder.component.html
+++ b/src/app/features/tasks/dialog-add-task-reminder/dialog-add-task-reminder.component.html
@@ -10,6 +10,7 @@
     <owl-date-time-inline [ngModel]="date"
                           name="owlDate"
                           ngDefaultControl
+                          [isNoMonthSquares]="true"
                           [min]="now"
                           [ngModelOptions]="{standalone:true}"
                           (ngModelChange)="updateFromCal($event)"></owl-date-time-inline>
diff --git a/src/styles.scss b/src/styles.scss
index f91ca7f6c6..23645929d8 100644
--- a/src/styles.scss
+++ b/src/styles.scss
@@ -4,6 +4,5 @@
 @import "styles/page";
 @import "styles/util";
 @import "styles/components/components";
-@import "~ngx-date-time-picker-schedule/assets/style/picker.min.css";
 
 //* {box-shadow: none !important;}
diff --git a/src/styles/components/_components.scss b/src/styles/components/_components.scss
index 6735af05cb..e2d329ae88 100644
--- a/src/styles/components/_components.scss
+++ b/src/styles/components/_components.scss
@@ -5,6 +5,7 @@
 @import "backdrop";
 @import "issue-table";
 @import "enlarge-img";
+@import "date-time-picker-schedule";
 @import "overwrite-material";
 @import "promise-btn";
 @import "global-error-alert";
diff --git a/src/styles/components/date-time-picker-schedule.scss b/src/styles/components/date-time-picker-schedule.scss
new file mode 100644
index 0000000000..ce1b074cb3
--- /dev/null
+++ b/src/styles/components/date-time-picker-schedule.scss
@@ -0,0 +1,773 @@
+@import "../../variables";
+
+$owl-accent-color: $c-accent;
+$owl-accent-contrast-color: $c-contrast;
+$owl-bg: transparent;
+$owl-shadow: none;
+$owl-today-not-selected: $c-primary;
+
+// dark theme
+$owl-dark-text-color-strong: rgba(255, 255, 255, .9);
+$owl-dark-text-color: rgba(255, 255, 255, .75);
+$owl-dark-text-color-less-intense: rgba(255, 255, 255, .5);
+$owl-dark-text-color-muted: rgba(255, 255, 255, .15);
+
+$owl-dark-light-selected-bg: rgba(255, 255, 255, .04);
+
+$owl-dark-divider-color: rgba(255, 255, 255, .12);
+
+$owl-dark-inp-bg-color: rgba(255, 255, 255, .08);
+$owl-dark-inp-fg-color: $owl-dark-text-color-strong;
+$owl-dark-arrow-color: $owl-dark-text-color-strong;
+
+// light (default) theme
+$owl-text-color-strong: rgba(0, 0, 0, .9);
+$owl-text-color: rgba(0, 0, 0, .75);
+$owl-text-color-less-intense: rgba(0, 0, 0, .5);
+$owl-text-color-muted: rgba(0, 0, 0, .15);
+
+$owl-light-selected-bg: rgba(0, 0, 0, .04);
+
+$owl-divider-color: rgba(0, 0, 0, .12);
+
+$owl-inp-bg-color: rgba(0, 0, 0, .04);
+
+$owl-inp-fg-color: $owl-text-color-strong;
+$owl-arrow-color: $owl-text-color-strong;
+
+
+$owl-missing: yellowgreen !default;
+
+
+.owl-dialog-container {
+  position: relative;
+  pointer-events: auto;
+  box-sizing: border-box;
+  display: block;
+  padding: 1.5em;
+  box-shadow: $owl-shadow;
+  border-radius: 2px;
+  overflow: auto;
+  background: $owl-bg;
+  width: 100%;
+  height: 100%;
+  outline: none;
+  color: $owl-text-color;
+
+  @include darkTheme(true) {
+    color: $owl-dark-text-color;
+  }
+}
+
+.owl-dt-container,
+.owl-dt-container * {
+  box-sizing: border-box;
+}
+
+.owl-dt-container {
+  display: block;
+  font-size: 1rem;
+  background: $owl-bg;
+  pointer-events: auto;
+  z-index: 1000;
+}
+
+.owl-dt-container-row {
+  border-bottom: 1px solid $owl-divider-color;
+
+  @include darkTheme(true) {
+    border-color: $owl-dark-divider-color;
+  }
+
+
+  &:last-child {
+    border-bottom: none;
+  }
+}
+
+.owl-dt-calendar {
+  display: -webkit-box;
+  display: flex;
+  -webkit-box-orient: vertical;
+  -webkit-box-direction: normal;
+  flex-direction: column;
+  width: 100%;
+}
+
+.owl-dt-calendar-control {
+  display: -webkit-box;
+  display: flex;
+  -webkit-box-align: center;
+  align-items: center;
+  font-size: 1em;
+  width: 100%;
+  padding: .5em;
+  color: $owl-text-color-strong;
+
+  @include darkTheme(true) {
+    color: $owl-dark-text-color-strong;
+  }
+
+  .owl-dt-calendar-control-content {
+    -webkit-box-flex: 1;
+    flex: 1 1 auto;
+    display: -webkit-box;
+    display: flex;
+    -webkit-box-pack: center;
+    justify-content: center;
+    -webkit-box-align: center;
+    align-items: center;
+
+    .owl-dt-calendar-control-button {
+      padding: 0 .8em;
+
+      &:hover {
+        background-color: $owl-missing;
+      }
+    }
+  }
+}
+
+.owl-dt-calendar-main {
+  display: -webkit-box;
+  display: flex;
+  -webkit-box-orient: vertical;
+  -webkit-box-direction: normal;
+  flex-direction: column;
+  -webkit-box-flex: 1;
+  flex: 1 1 auto;
+  padding: 0 .2em .2em;
+  outline: 0;
+}
+
+.owl-dt-calendar-view {
+  display: block;
+  -webkit-box-flex: 1;
+  flex: 1 1 auto;
+}
+
+.owl-dt-calendar-multi-year-view {
+  display: -webkit-box;
+  display: flex;
+  -webkit-box-align: center;
+  align-items: center;
+
+  .owl-dt-calendar-table {
+    width: calc(100% - 3em);
+
+    .owl-dt-calendar-header th {
+      padding-bottom: .25em;
+    }
+  }
+}
+
+.owl-dt-calendar-table {
+  width: 100%;
+  border-collapse: collapse;
+  border-spacing: 0;
+
+  .owl-dt-calendar-header {
+    color: $owl-text-color-less-intense;
+
+    @include darkTheme(true) {
+      color: $owl-dark-text-color-less-intense;
+    }
+
+    .owl-dt-weekdays {
+      th {
+        font-size: .7em;
+        font-weight: 400;
+        text-align: center;
+        padding-bottom: 0;
+      }
+    }
+
+    .owl-dt-calendar-table-divider {
+      position: relative;
+      height: 1px;
+      padding-bottom: .5em;
+
+      &:after {
+        content: '';
+        position: absolute;
+        top: 0;
+        left: -.5em;
+        right: -.5em;
+        height: 1px;
+        background: $owl-divider-color;
+
+        @include darkTheme(true) {
+          color: $owl-dark-divider-color;
+        }
+      }
+    }
+  }
+
+  .owl-dt-calendar-cell {
+    position: relative;
+    height: 0;
+    line-height: 0;
+    text-align: center;
+    outline: 0;
+    color: $owl-text-color;
+    -webkit-appearance: none;
+    padding-top: 12px;
+    -webkit-tap-highlight-color: transparent;
+
+    @include darkTheme(true) {
+      color: $owl-dark-text-color;
+    }
+  }
+
+  .owl-dt-calendar-cell-content {
+    position: absolute;
+    top: 5%;
+    left: 5%;
+    display: -webkit-box;
+    display: flex;
+    -webkit-box-align: center;
+    align-items: center;
+    -webkit-box-pack: center;
+    justify-content: center;
+    box-sizing: border-box;
+    width: 90%;
+    height: 90%;
+    font-size: .8em;
+    line-height: 1;
+    border: 1px solid transparent;
+    border-radius: 999px;
+    color: inherit;
+    cursor: pointer;
+  }
+
+  .owl-dt-calendar-cell-out {
+    opacity: .3;
+  }
+
+  .owl-dt-calendar-cell-today:not(.owl-dt-calendar-cell-selected) {
+    border-color: $owl-today-not-selected;
+  }
+
+  .owl-dt-calendar-cell-selected {
+    color: $owl-accent-contrast-color;
+    background-color: $owl-accent-color;
+
+    &.owl-dt-calendar-cell-today {
+      box-shadow: inset 0 0 0 1px hsla(0, 0%, 100%, .85);
+    }
+  }
+
+  .owl-dt-calendar-cell-disabled {
+    cursor: default;
+
+    & > .owl-dt-calendar-cell-content:not(.owl-dt-calendar-cell-selected) {
+      color: $owl-text-color-muted;
+
+      @include darkTheme(true) {
+        color: $owl-dark-text-color-muted;
+      }
+    }
+
+    & > .owl-dt-calendar-cell-content.owl-dt-calendar-cell-selected {
+      opacity: .4;
+    }
+
+    & > .owl-dt-calendar-cell-today:not(.owl-dt-calendar-cell-selected) {
+      border-color: $owl-missing;
+    }
+  }
+
+  .owl-dt-calendar-cell-active:focus > .owl-dt-calendar-cell-content:not(.owl-dt-calendar-cell-selected),
+  :not(.owl-dt-calendar-cell-disabled):hover > .owl-dt-calendar-cell-content:not(.owl-dt-calendar-cell-selected) {
+    background-color: $owl-light-selected-bg;
+
+    @include darkTheme(true) {
+      background-color: $owl-dark-light-selected-bg;
+    }
+  }
+
+  .owl-dt-calendar-cell-in-range {
+    background: $owl-missing;
+
+    &.owl-dt-calendar-cell-range-from {
+      border-top-left-radius: 999px;
+      border-bottom-left-radius: 999px;
+    }
+
+    &.owl-dt-calendar-cell-range-to {
+      border-top-right-radius: 999px;
+      border-bottom-right-radius: 999px;
+    }
+  }
+}
+
+.owl-dt-timer {
+  display: -webkit-box;
+  display: flex;
+  -webkit-box-pack: center;
+  justify-content: center;
+  width: 100%;
+  padding: .5em;
+  height: auto;
+  outline: none;
+}
+
+.owl-dt-timer-box {
+  position: relative;
+  display: inline-flex;
+  -webkit-box-orient: vertical;
+  -webkit-box-direction: normal;
+  flex-direction: column;
+  -webkit-box-align: center;
+  align-items: center;
+  width: 50%;
+  height: 100%;
+}
+
+.owl-dt-timer-content {
+  -webkit-box-flex: 1;
+  flex: 1 1 auto;
+  display: -webkit-box;
+  display: flex;
+  -webkit-box-pack: center;
+  justify-content: center;
+  -webkit-box-align: center;
+  align-items: center;
+  width: 100%;
+  margin: .2em 0;
+
+  .owl-dt-timer-input {
+    display: block;
+    width: 2em;
+    text-align: center;
+    border: 1px solid $owl-divider-color;
+    color: $owl-inp-fg-color;
+    border-radius: 3px;
+    outline: medium none;
+    font-size: 1.2em;
+    padding: .2em;
+    background: $owl-inp-bg-color;
+
+
+    @include darkTheme(true) {
+      border-color: $owl-dark-divider-color;
+      color: $owl-dark-inp-fg-color;
+      background: $owl-dark-inp-bg-color;
+    }
+  }
+}
+
+
+.owl-dt-timer-divider {
+  display: inline-block;
+  align-self: flex-end;
+  position: absolute;
+  width: .6em;
+  color: $owl-text-color-strong;
+  height: 100%;
+  left: -.3em;
+
+  @include darkTheme(true) {
+    color: $owl-dark-text-color-strong;
+  }
+
+  &:before,
+  &:after {
+    content: '';
+    display: inline-block;
+    width: .35em;
+    height: .35em;
+    position: absolute;
+    left: 50%;
+    border-radius: 50%;
+    -webkit-transform: translateX(-50%);
+    transform: translateX(-50%);
+    background-color: currentColor;
+  }
+
+  &:before {
+    top: 35%;
+  }
+
+  &:after {
+    bottom: 35%;
+  }
+}
+
+.owl-dt-control-button {
+  -webkit-user-select: none;
+  -moz-user-select: none;
+  -ms-user-select: none;
+  user-select: none;
+  cursor: pointer;
+  outline: none;
+  border: none;
+  -webkit-tap-highlight-color: transparent;
+  display: inline-block;
+  white-space: nowrap;
+  text-decoration: none;
+  vertical-align: baseline;
+  margin: 0;
+  padding: 0;
+  background-color: transparent;
+  font-size: 1em;
+  color: inherit;
+
+  .owl-dt-control-button-content {
+    position: relative;
+    display: inline-flex;
+    -webkit-box-pack: center;
+    justify-content: center;
+    -webkit-box-align: center;
+    align-items: center;
+    outline: none;
+  }
+}
+
+.owl-dt-control-period-button {
+  .owl-dt-control-button-content {
+    height: 1.5em;
+    padding: 0 .5em;
+    border-radius: 3px;
+    -webkit-transition: background-color 100ms linear;
+    transition: background-color 100ms linear;
+  }
+
+  &:hover > .owl-dt-control-button-content {
+    background-color: $owl-light-selected-bg;
+
+
+    @include darkTheme(true) {
+      background-color: $owl-dark-light-selected-bg;
+    }
+  }
+
+  .owl-dt-control-button-arrow {
+    display: -webkit-box;
+    display: flex;
+    -webkit-box-pack: center;
+    justify-content: center;
+    -webkit-box-align: center;
+    align-items: center;
+    width: 1em;
+    height: 1em;
+    margin: .1em;
+    transition: transform 200ms ease;
+    color: $owl-arrow-color;
+    fill: $owl-arrow-color;
+
+    @include darkTheme(true) {
+      color: $owl-dark-arrow-color;
+      fill: $owl-dark-arrow-color;
+    }
+  }
+}
+
+.owl-dt-control-arrow-button {
+  color: $owl-arrow-color;
+
+  @include darkTheme(true) {
+    color: $owl-dark-arrow-color;
+  }
+
+  .owl-dt-control-button-content {
+    padding: 0;
+    border-radius: 50%;
+    width: 1.5em;
+    height: 1.5em;
+  }
+
+  &[disabled] {
+    cursor: default;
+    color: $owl-text-color-muted;
+
+    @include darkTheme(true) {
+      color: $owl-dark-text-color-muted;
+    }
+  }
+
+  svg {
+    width: 50%;
+    height: 50%;
+    fill: currentColor;
+  }
+}
+
+.owl-dt-inline-container,
+.owl-dt-popup-container {
+  position: relative;
+  width: 18.5em;
+  box-shadow: $owl-shadow;
+
+  .owl-dt-calendar,
+  .owl-dt-timer {
+    width: 100%;
+  }
+
+  .owl-dt-calendar {
+    height: 20.25em;
+  }
+}
+
+.owl-dt-inline-container {
+  .owl-dt-calendar {
+    height: auto;
+  }
+}
+
+
+.owl-dt-dialog-container {
+  max-height: 95vh;
+  margin: -1.5em;
+
+  .owl-dt-calendar {
+    min-width: 250px;
+    max-width: 750px;
+    max-height: 750px;
+  }
+
+  .owl-dt-timer {
+    max-width: 750px;
+  }
+}
+
+@media all and (orientation: landscape) {
+  .owl-dt-dialog-container {
+    .owl-dt-calendar {
+      width: 58vh;
+      height: 62vh;
+    }
+
+    .owl-dt-timer {
+      width: 58vh;
+    }
+  }
+}
+
+@media all and (orientation: portrait) {
+  .owl-dt-dialog-container {
+  }
+}
+
+.owl-dt-container-buttons {
+  display: -webkit-box;
+  display: flex;
+  width: 100%;
+  height: 2em;
+  color: $owl-accent-color;
+}
+
+.owl-dt-container-control-button {
+  font-size: 1em;
+  width: 50%;
+  height: 100%;
+  border-radius: 0;
+
+  .owl-dt-control-button-content {
+    height: 100%;
+    width: 100%;
+    -webkit-transition: background-color 100ms linear;
+    transition: background-color 100ms linear;
+  }
+
+  &:hover {
+    .owl-dt-control-button-content {
+      background-color: $owl-missing;
+    }
+  }
+}
+
+.owl-dt-container-info {
+  padding: 0 .5em;
+  cursor: pointer;
+  -webkit-tap-highlight-color: transparent;
+
+  .owl-dt-container-range {
+    outline: none;
+
+    .owl-dt-container-range-content {
+      display: -webkit-box;
+      display: flex;
+      -webkit-box-pack: justify;
+      justify-content: space-between;
+      padding: .5em 0;
+      font-size: .8em;
+    }
+
+    &:last-child {
+      border-top: 1px solid $owl-divider-color;
+
+      @include darkTheme(true) {
+        border-color: $owl-dark-divider-color;
+      }
+    }
+  }
+
+  .owl-dt-container-info-active {
+    color: $owl-accent-color;
+  }
+}
+
+.owl-dt-container-disabled,
+.owl-dt-trigger-disabled {
+  opacity: 0.35;
+  filter: Alpha(Opacity=35);
+  background-image: none;
+  cursor: default !important;
+}
+
+.owl-dt-timer-hour12 {
+  display: -webkit-box;
+  display: flex;
+  -webkit-box-pack: center;
+  justify-content: center;
+  -webkit-box-align: center;
+  align-items: center;
+  color: $owl-accent-color;
+
+  .owl-dt-timer-hour12-box {
+    border: 1px solid currentColor;
+    border-radius: 2px;
+    -webkit-transition: background 200ms ease;
+    transition: background 200ms ease;
+
+    .owl-dt-control-button-content {
+      width: 100%;
+      height: 100%;
+      padding: .5em;
+    }
+
+    &:focus, &:hover {
+      .owl-dt-control-button-content {
+        background: $owl-accent-color;
+        color: $owl-accent-contrast-color;
+      }
+    }
+  }
+}
+
+.owl-dt-calendar-only-current-month {
+  .owl-dt-calendar-cell-out {
+    visibility: hidden;
+    cursor: default;
+  }
+}
+
+.owl-dt-inline {
+  display: inline-block;
+}
+
+.owl-dt-control {
+  outline: none;
+  cursor: pointer;
+
+  .owl-dt-control-content {
+    outline: none;
+  }
+
+  &:focus > .owl-dt-control-content {
+    background-color: $owl-missing;
+  }
+
+  &:not(:-moz-focusring):focus > .owl-dt-control-content {
+    box-shadow: none;
+  }
+}
+
+.owl-hidden-accessible {
+  border: 0;
+  clip: rect(0 0 0 0);
+  height: 1px;
+  margin: -1px;
+  overflow: hidden;
+  padding: 0;
+  position: absolute;
+  width: 1px;
+}
+
+
+.owl-header-wrapper {
+  display: flex;
+  border-bottom: 1px solid $owl-divider-color;
+  align-items: stretch;
+
+  @include darkTheme(true) {
+    border-color: $owl-dark-divider-color;
+  }
+
+  > * {
+    flex: 1;
+
+    &:first-child {
+      border-right: 1px solid $owl-divider-color;
+
+      @include darkTheme(true) {
+        border-color: $owl-dark-divider-color;
+      }
+    }
+  }
+}
+
+
+.owl-dt-schedule {
+  display: flex;
+  flex-direction: column;
+}
+
+.owl-dt-schedule-item {
+  flex: 1;
+  padding: 0 0.5em;
+  font-size: 0.9em;
+  background: transparent;
+  border: none;
+  cursor: pointer;
+  width: auto;
+  display: flex;
+  align-items: center;
+  opacity: 0.7;
+  min-height: 2em;
+  color: $owl-text-color-strong;
+
+  @include darkTheme(true) {
+    color: $owl-dark-text-color-strong;
+  }
+
+  &:focus,
+  &:hover {
+    background: $owl-light-selected-bg;
+    opacity: 1;
+
+    @include darkTheme(true) {
+      background: $owl-dark-light-selected-bg;
+    }
+  }
+}
+
+.owl-dt-schedule-item--icon {
+  margin-right: 0.5em;
+  opacity: 0.7;
+  width: 1em;
+}
+
+.owl-top-input {
+  border-bottom: 1px solid $owl-divider-color;
+
+  @include darkTheme(true) {
+    border-color: $owl-dark-divider-color;
+  }
+
+  input {
+    border: none;
+    width: 100%;
+    height: 36px;
+    line-height: 36px;
+    padding: 0 .5em;
+    color: $owl-inp-fg-color;
+    background: $owl-inp-bg-color;
+
+    @include darkTheme(true) {
+      color: $owl-dark-inp-fg-color;
+      background: $owl-dark-inp-bg-color;
+    }
+  }
+}