# Every active day, and why

> Open an airspace or a scheduled NOTAM to see the days it is active, with the AIP schedule, AUP slot or NOTAM behind each one.

NOTAMbriefing.com, https://notambriefing.com/features/activation-calendar. Included in Live (https://notambriefing.com/pricing).

![Open an airspace or a scheduled NOTAM to see the days it is active, with the AIP schedule, AUP slot or NOTAM behind each one.](https://notambriefing.com/showcase/activation-calendar.still.svg)

## When, and on whose word

A status colour answers one question: is this airspace active in my window? Before a flight you often need the next: when exactly, on which days, and which source says so. The activation calendar answers both in the airspace details.

## How to read it

Each day is a row on a UTC scale from 00 to 24, with a lane for each source: the published AIP schedule, the AUP and its UUP updates, and NOTAMs. Days with the same pattern fold into one row, and a day without activity says so.

Tap a day to select it. The Sources list below then shows the AUP slots and NOTAMs that act on that day, so you can open the NOTAM itself.

- Map range: the days of your Activity range
- Today: the current UTC day
- All: every day the sources cover

## Scheduled NOTAMs too

A NOTAM with a schedule, such as daily 0800-1600, shows its coming week as the same day rows, so a recurring activation is clear at a glance.

## Common pilot questions

### Why does a day show more than one lane?

Each source has its own lane. An AUP slot and a NOTAM can both activate an airspace on the same day, at different times, and the calendar shows both.

### How far ahead does it go?

As far as the sources go. NOTAMs and published schedules can run weeks ahead; the AUP is usually published the day before. If the map and an official source ever disagree, the official source is right.

## Read more

- [What are the AUP and UUP?](https://notambriefing.com/guides/what-is-aup-uup)
- [Flexible Use of Airspace](https://notambriefing.com/guides/flexible-use-of-airspace)
- [How to read a NOTAM](https://notambriefing.com/guides/how-to-read-a-notam)