Scheduling

Natural language

Scheduled frame transfers allow scheduling using natural language.

The follow is a non-exhaustive list of examples

Frequencies

Frequencies
every day at five
every weekend at five
every day at 5 pm
every tuesday at 5 pm
every wed at 5 pm
every day at 16:30
every day at 16:00 and 18:00
every day at noon
every day at midnight
every tuesday and monday at 5pm
every wed or Monday at 5pm and 11
every day at 5 pm on America/Los_Angeles
every day at 6 pm in Asia/Tokyo
every 3 hours
every 4 months
every 5 minutes
every 15s

Durations

Frequencies can be specified using durations. These are strings of numbers followed by a symbol to denote the time period. Symbols are as follows:

Symbol	Meaning

Symbol	Meaning
y	Year
M	Month
d	Day
h	Hour
m	Minute
s	Second

Examples:

Duration	Meaning

Duration	Meaning
1y2M3d	Every 1 year, 2 months, and 3 days
1d	Every day
15m	Every 15 minutes
15m55s	Every 15 minutes and 55 seconds
1M15d	Every 1 month and 15 days

Cron

Scheduled Frame Transfers allow scheduling using cron expressions, in addition to semantic frequencies.

Cron expressions are a standard for denoting frequencies. They allow you to schedule things to run every minute, every day, as well as more complex scenarios such as every monday at midnight, or the first day of the month, every month.

Examples:

Schedule	Expression

Schedule	Expression
Every minute	* * * * *
Every hour	0 * * * *
Every day (at midnight)	0 0 * * *
Every day (at 9:00am)	0 9 * * *
Every day (at 9:30am)	30 9 * * *
On the first of the month	0 0 1 * *
Every day (at midnight, mon-fri only)	0 0 * * 1-5
Every monday (at midnight)	0 0 * * 1
On the first day of every second month	0 0 1 /2
Every hour (between 9 and 5)	0 9-17 * * *