The module provides you Manually Add multiple cron time in the second.

INSTALLATION
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* Install the Cron Timing module as you would normally install a contributed Drupal module. Visit https://www.drupal.org/docs/extending-drupal/installing-modules for further information.

CONFIGURATION
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* The Module has only a small configuration from there add timing of corn as per your requirements (/admin/config/system/cron_timing)