The digital-mode contest weekends: RTTY - ARRL RTTY Roundup, CQ WPX RTTY, BARTG, CQ WW RTTY, JARTS and WAE RTTY - and FT8/FT4 - the ARRL International Digital Contest, WW Digi and the FT Roundup.
Every contest is shown at its start and end in your local time instead of UTC. Select one for its modes, sponsor and a link to the rules.
In Amateur Radio. Perfect Clock — a world clock with your calendar across time zones.