To enable the various cloud backup options, sign up for a Productivity or Professional Plan, then:
Cloud backups are performed daily at approximately midnight Central Standard Time (CST is 6 hours behind Coordinated Universal Time (UTC)).
Backups are organized as calendar folders:
2019/ ├── February/ │ ├── February 15 2019.txt │ ├── February 16 2019.txt │ ├── February 17 2019.txt
You can decrypt a backup file using the offline instructions.