This Bash script serves as a cron helper for executing a command only during the period between sunrise and sunset at a specified location.

1. Ensure you have Bash and the jq tool installed on your system.
2. Set your latitude, longitude, and timezone details in the script.
3. Run the script using bash sunny.sh && your_program to execute your_program only during the period between sunrise and sunset.

• Latitude and Longitude: Specify your geographical coordinates (latitude and longitude) in the script where you want to check the sunrise and sunset times.
• Timezone: Adjust the timezone difference from UTC in the TZD variable. For example, if your timezone is UTC+5:30, set TZD="5 hours 30 minutes".
• Extension Period: The period can be extended on either or both sides by adjusting the TBSR (time before sunrise) and TBSS (time after sunset) variables in seconds.

bash sunrise_sunset_cron.sh && your_program