Update 2023-09-13: Travellers in or heading to Germany should still bear in mind that the warning capabilities of the German state will be tested countrywide on Thursday and 11 am (14 September, local time).
2023-09-07: On Thursday (14 September) at 11:00 a.m. (local time), the warning capabilities of the German state will be tested countrywide. These systems include broadcasting facilities, social media, the NINA warning app, sirens, loudspeaker vehicles and billboards. In future years, a Germany-wide warning day will be held annually on the second Thursday in September.