cron parser

Returns the next timestamp

```

┌───────────── minute (0 - 59)

│ ┌───────────── hour (0 - 23)

│ │ ┌───────────── day of the month (1 - 31)

│ │ │ ┌───────────── month (1 - 12)

│ │ │ │ ┌───────────── day of the week (0 - 6)

│ │ │ │ │

│ │ │ │ │

│ │ │ │ │

* * * * * command to execute

```

|Field|Required|Allowed values|Allowed special characters| |-----|--------|--------------|--------------------------| |Minutes| Yes | 0–59 | * / , - | |Hours | Yes | 0–23 | * / , - | |Day of month| Yes | 1–31 | * / , - | |Month | Yes | 1–12 | * / , - | |Day of week | Yes | 0–6 | * / , - |

For fixed intervals

@every <duration>

For example, @every 2h15m30s would be every 2 hours, 15 minutes and 30 seconds.