Calendar file guides
Formats, imports, time zones, and the details worth checking before you move a calendar.
Turn a spreadsheet schedule into a calendar→
A CSV template and a reviewable workflow for class schedules, shifts and event lists from Excel or Google Sheets.
Check an AI-generated ICS file before importing it→
Review a schedule made by ChatGPT, Gemini or another assistant for wrong dates, missing events and calendar-file errors.
Google Calendar import failed: what to check first→
A practical sequence for zero-event imports, wrong dates, missing repeats and large calendar files.
ICS vs CSV: which calendar format should you use?→
Use ICS to preserve calendar structure and CSV to inspect rows in a spreadsheet.
How to share busy times without sharing event details→
What a calendar export can reveal, what a busy-only copy removes, and what still remains.
Split a large ICS file without breaking repeating events→
Why byte limits, time zones and recurrence families matter when dividing a calendar export.
Why calendar event times shift after import→
Understand UTC, floating time, TZID and the special case of all-day dates.
Duplicate calendar events: exact copies versus changed versions→
Why matching titles and times are not enough to decide which calendar events to remove.