Keep timezone and all-day meaning during calendar migration
Read UTC, embedded zones, floating times and exclusive end dates correctly.
Read the guide ↗Field guide / 02Merge ICS files without hiding duplicates and exceptions
Use UID identity, explicit version choices and a retained recurrence audit.
Read the guide ↗Field guide / 03Use ICS and CSV for the jobs they can actually preserve
Create one-off events, inspect bounded snapshots and recognize unrecoverable data.
Read the guide ↗