Quarter Calendar app shows the current quarter based on the calendar year (starting in January).
Quarter Calendar offers 3 tools:
1. An app to read the current calendar day.
2. A home screen widget to glance at the current quarter.
3. A keyguard time widget to replace the built-in Android clock.
Disclaimer: No warranty or liability when using this app. Your tax reporting quarters and fiscal anniversary may differ in your organization. Use at your own risk.