Hi, I did
$ git clone https://code.orgmode.org/bzg/org-mode.git (which got me 643481fade386aa51d88ccc22b9669b0b77daaa1 ) $ cd org-mode $ make autoloads $ emacs -Q -l /tmp/init.el /tmp/foo.org where /tmp/init.el has: (add-to-list 'load-path "~/src/org-mode/lisp") (require 'org) and /tmp/foo.org has: #+STARTUP: showall * Top #+BEGIN: clocktable :maxlevel 3 :tstart "2018-10-01" :tend "2018-11-01" :step day :stepskip0 t #+END: ** TODO Undeobfuscate widget :LOGBOOK: CLOCK: [2018-10-29 må. 14:17]--[2018-10-29 må. 14:35] => 0:18 :END: ** DONE Deobfuscate widget :LOGBOOK: CLOCK: [2018-10-28 su. 14:17]--[2018-10-28 su. 14:35] => 0:18 :END: and then, on the BEGIN line, I did C-c C-c. This gave me: #+STARTUP: showall * Top #+BEGIN: clocktable :maxlevel 3 :tstart "2018-10-01" :tend "2018-11-01" :step day :stepskip0 t Daily report: [2018-10-28 su.] | Headline | Time | | |------------------------+--------+------| | *Total time* | *0:18* | | |------------------------+--------+------| | Top | 0:18 | | | \_ Deobfuscate widget | | 0:18 | Daily report: [2018-10-28 su.] | Headline | Time | | |--------------------------+--------+------| | *Total time* | *0:18* | | |--------------------------+--------+------| | Top | 0:18 | | | \_ Undeobfuscate widget | | 0:18 | #+END: ** TODO Undeobfuscate widget :LOGBOOK: CLOCK: [2018-10-29 må. 14:17]--[2018-10-29 må. 14:35] => 0:18 :END: ** DONE Deobfuscate widget :LOGBOOK: CLOCK: [2018-10-28 su. 14:17]--[2018-10-28 su. 14:35] => 0:18 :END: The second date is 28, where it should be 29. I see the same on org-mode 9.1.9 (bundled with Emacs 26.1) or 9.1.12 and 9.1.14 from melpa-stable, gnu elpa. I do *not* see this in 8.2.10 bundled with Emacs 25.3.2. The bug is also there without ":stepskip0 t" Emacs : GNU Emacs 25.3.2 (x86_64-pc-linux-gnu, GTK+ Version 3.22.29) of 2018-04-19 Package: Org mode version 9.1.14 (release_9.1.14-1012-g643481 @ /home/unhammer/src/org-mode/lisp/) current state: ============== (setq org-tab-first-hook '(org-babel-hide-result-toggle-maybe org-babel-header-arg-expand) org-speed-command-hook '(org-speed-command-activate org-babel-speed-command-activate) org-occur-hook '(org-first-headline-recenter) org-metaup-hook '(org-babel-load-in-session-maybe) org-confirm-shell-link-function 'yes-or-no-p org-after-todo-state-change-hook '(org-clock-out-if-current) org-src-mode-hook '(org-src-babel-configure-edit-buffer org-src-mode-configure-edit-buffer) org-agenda-before-write-hook '(org-agenda-add-entry-text) org-babel-pre-tangle-hook '(save-buffer) org-mode-hook '((closure (org--rds reftex-docstruct-symbol orgtbl-line-start-regexp org-element-greater-elements org-table-coordinate-overlays org-table-auto-blank-field org-clock-history org-agenda-current-date org-with-time org-defdecode org-def org-read-date-inactive org-ans2 org-ans1 org-columns-current-fmt-compiled org-clock-current-task org-clock-effort org-agenda-skip-function org-agenda-skip-comment-trees org-agenda-archives-mode org-end-time-was-given org-time-was-given org-log-note-extra org-log-note-purpose org-log-post-message org-last-inserted-timestamp org-last-changed-timestamp org-entry-property-inherited-from org-blocked-by-checkboxes org-state org-agenda-headline-snapshot-before-repeat org-capture-last-stored-marker org-agenda-start-on-weekday org-agenda-buffer-tmp-name clean-buffer-list-kill-buffer-names org-id-link-to-org-use-id org-agenda-buffer-name org-priority-regexp buffer-face-mode-face org-mode-map org-tbl-menu org-org-menu org-struct-menu org-entities org-last-state org-id-track-globally org-clock-start-time texmathp-why remember-data-file org-agenda-tags-todo-honor-ignore-options iswitchb-temp-buflist calc-embedded-open-mode calc-embedded-open-formula calc-embedded-close-formula align-mode-rules-list org-emphasis-alist org-emphasis-regexp-components org-export-registered-backends org-modules org-babel-load-languages org-indent-indentation-per-level org-element-paragraph-separate ffap-url-regexp org-inlinetask-min-level t) nil (add-hook (quote change-major-mode-hook) (quote org-show-all) (quote append) (quote local)) ) (closure (org-bracket-link-regexp org-src-window-setup *this* org-babel-confirm-evaluate-answer-no org-src-preserve-indentation org-src-lang-modes org-link-file-path-type org-edit-src-content-indentation org-babel-library-of-babel t) nil (add-hook (quote change-major-mode-hook) (quote org-babel-show-result-all) (quote append) (quote local)) ) org-babel-result-hide-spec org-babel-hide-all-hashes) org-bibtex-headline-format-function '(closure (org-id-locations org-agenda-search-view-always-boolean org-agenda-overriding-header t) (entry) (cdr (assq :title entry))) org-archive-hook '(org-attach-archive-delete-maybe) org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-show-empty-lines org-optimize-window-after-visibility-change) org-confirm-elisp-link-function 'yes-or-no-p org-metadown-hook '(org-babel-pop-to-session-maybe) org-link-parameters '(("id" :follow org-id-open) ("eww" :follow eww :store org-eww-store-link) ("rmail" :follow org-rmail-open :store org-rmail-store-link) ("mhe" :follow org-mhe-open :store org-mhe-store-link) ("irc" :follow org-irc-visit :store org-irc-store-link :export org-irc-export) ("info" :follow org-info-open :export org-info-export :store org-info-store-link) ("gnus" :follow org-gnus-open :store org-gnus-store-link) ("docview" :follow org-docview-open :export org-docview-export :store org-docview-store-link) ("bibtex" :follow org-bibtex-open :store org-bibtex-store-link) ("bbdb" :follow org-bbdb-open :export org-bbdb-export :complete org-bbdb-complete-link :store org-bbdb-store-link) ("w3m" :store org-w3m-store-link) ("file+sys") ("file+emacs") ("doi" :follow org--open-doi-link) ("elisp" :follow org--open-elisp-link) ("file" :complete org-file-complete-link) ("ftp" :follow (lambda (path) (browse-url (concat "ftp:" path)))) ("help" :follow org--open-help-link) ("http" :follow (lambda (path) (browse-url (concat "http:" path)))) ("https" :follow (lambda (path) (browse-url (concat "https:" path)))) ("mailto" :follow (lambda (path) (browse-url (concat "mailto:"; path)))) ("news" :follow (lambda (path) (browse-url (concat "news:"; path)))) ("shell" :follow org--open-shell-link)) org-clock-out-hook '(org-clock-remove-empty-clock-drawer) )
