The man who died on the Hat Yai-bound Thaksin Express late night 30 MAR and whose fluids later tested positive for COVID-19, may have prodded the SRT to make this sudden announcement.
I will say "Void the stamp", IF the IB can guarantee an immediate refund.
Hopefully this void qualifies me immediately for the auto-extend.
Logic tells us that after saying "after MAR 1" and "before MAR 1", those of us who have mastered counting should automatically address "on MAR 1" as well.