What are common cron schedule examples?

Here are some common cron schedule examples:

Every minute:
```
* * * * * command_to_execute
```
Every hour:
```
0 * * * * command_to_execute
```
Every day at midnight:
```
0 0 * * * command_to_execute
```
Every day at 5 PM:
```
0 17 * * * command_to_execute
```
Every Sunday at 3 AM:
```
0 3 * * 0 command_to_execute
```
On the first day of every month at 6 AM:
```
0 6 1 * * command_to_execute
```
Every weekday (Monday to Friday) at 9 AM:
```
0 9 * * 1-5 command_to_execute
```
Every 15 minutes:
```
*/15 * * * * command_to_execute
```
At 10 PM on the last day of every month:
```
0 22 L * * command_to_execute
```
At 5 AM on the 1st and 15th of every month:
```
0 5 1,15 * * command_to_execute
```

These examples can be adjusted based on your specific needs by changing the command and the timing fields.