Get a free alert the moment an interview slot opens at Singapore, U.S. Embassy in Singapore, SG. Haya checks the official CBP scheduler every 5 minutes, around the clock.
Cancellations free up interview slots all the time — they're just gone within minutes. Haya watches Singapore, U.S. Embassy for you and emails you the moment one appears, so you can book it at ttp.cbp.dhs.gov before it's taken. Email alerts are free; push and SMS alerts for near-term slots are on Pro.