zulip/web/templates/send_later_modal.hbs

<div class="micromodal" id="send_later_modal" aria-hidden="true">
    <div class="modal__overlay" tabindex="-1">
        <div class="modal__container" role="dialog" aria-modal="true" aria-labelledby="send_later_modal_label">
            <header class="modal__header">
                <h1 class="modal__title" id="send_later_modal_label">
                    {{t "Schedule message" }}
                </h1>
                <button class="modal__close" aria-label="{{t 'Close modal' }}" data-micromodal-close></button>
            </header>
            <main class="modal__content">
                <div class="send_later_options">
                    <ul class="nav nav-list">
                        {{#if possible_send_later_today}}
                            {{#each possible_send_later_today}}
                                <li>
                                    <a id="{{@key}}" class="send_later_today" tabindex="0">{{this.text}}</a>
                                </li>
                            {{/each}}
                        {{/if}}
                        {{#each send_later_tomorrow}}
                            <li>
                                <a id="{{@key}}" class="send_later_tomorrow" tabindex="0">{{this.text}}</a>
                            </li>
                        {{/each}}
                        <li>
                            <a class="send_later_custom" tabindex="0">{{t 'Custom time'}}</a>
                        </li>
                    </ul>
                </div>
            </main>
        </div>
    </div>
</div>