The federal government entered a shutdown at midnight on Oct. 1 when lawmakers failed to pass new funding bills. More programs are expected to be affected by a longer shutdown, and administration officials have suggested that federal workers could be fired. NBC News is tracking the key dates and events of the ongoing shutdown (Note: * Asterisked events are tentative):Day 1Oct. 1The federal government shuts down. (source)Day 3Oct. 3By the end of the day, the current shutdown will have lasted longer than seven previous government shutdowns. (source)Day 93Jan. 1The Centers for Medicare & Medicaid Services could run out of Medicaid funding.