Open Radar

 
Summary:
In Calendar on OS X 10.10, when attempting to print a weekly or monthly calendar, the value for 'Start week on' from the application preferences is incremented by 1 (e.g. a calendar week starting on Monday will print starting on Tuesday).

Steps to Reproduce:
1. Note the 'Start week on' setting from Calendar > Preferences > General
2. Note that the display on-screen works correctly, reflecting the selected 'Start week on' setting.
3. Choose File > Print
4a. Zoom in and inspect the print preview to see which day the week starts on.
4b. Print the calendar and inspect which day the week starts on.

Expected Results:
For both 4a. and 4b., it is expected that the printout should match the on-screen display in terms of which day of week to start on.

Actual Results:
For both 4a. and 4b., the calendar previews and prints out with a start day one greater than the day selected in the preferences.

Version:
OS X 10.10
Calendar 8.0 (2026)

Notes:
As a workaround, this can be overcome by temporarily changing the week start day to be one lower than desired; this will counteract the addition of a day and result in a printout of the correct information. Obviously not ideal.

Configuration:
This happens consistently on my install of OS X 10.10. Additionally a web search turned up a similar result from another user running the same version of the application (https://discussions.apple.com/thread/6637741)