Cron expression first of month

- Cron expression first day of month
- Cron expression every first monday of month
- Cron expression first tuesday of every month
- Cron expression for first weekday of every month
- Cron expression for first working day of every month
- Cron expression first of every month
- Cron expression first sunday of month
- Cron expression first weekday of month
- Cron expression first monday of month
- Cron expression first saturday of month
- Cron expression first friday of month
- Cron expression first working day of month
- Quartz cron expression first day of month
- Cron expression first and last day of month
- Spring boot cron expression first day of month