BEGIN:VCALENDAR
VERSION:2.0
CALSCALE:GREGORIAN
BEGIN:VEVENT
URL:https://www.learndesk.us/class-de/5169853650436096/lesson/a5d129c3b6d40a8c7802a84369f5ba04?ref=outlook-calendar
SUMMARY:When Long Can Be Short: A Few Notes About Time
DTSTART;TZID=America/Los_Angeles:20260527T190000
DTEND;TZID=America/Los_Angeles:20260527T200000
LOCATION:https://www.learndesk.us/class-de/5169853650436096/lesson/a5d129c3b6d40a8c7802a84369f5ba04?ref=outlook-calendar
DESCRIPTION: Einen Moment lang means during a moment‘s time. As you can see, lang (which basically means long) does not really have to be a long time. This expression is quite useful if you want to say how long you did something / are doing something / will be doing something, but remember the Akkusativ.Ich muss fünf Minuten lang warten.Ein Jahr lang lerne ich schon Deutsch.Einen Monat lang werde ich in Österreich leben.
If you want to say that something is going to happen in the future and you want to say how much time it will take until it happens, use in with Dativ:In einer Woche fahre ich nach Erlangen.In zwei Minuten fährt die S-Bahn.In einem Monat beginnt die Schule.

The opposite for saying how long ago something happened is vor with Dativ:
Vor einer Woche bin ich nach Erlangen gefahren.
Vor zwei Minuten ist die S-Bahn gefahren.
Vor einem Monat hat die Schule begonnen.
The difference between vor and seit is that seit is referring to an event that...

https://www.learndesk.us/class-de/5169853650436096/lesson/a5d129c3b6d40a8c7802a84369f5ba04?ref=outlook-calendar
STATUS:CONFIRMED
SEQUENCE:3
BEGIN:VALARM
TRIGGER:-PT10M
DESCRIPTION:Class Reminder
ACTION:DISPLAY
END:VALARM
END:VEVENT
END:VCALENDAR