An IndyCar Schedule Is More Than a List of Sundays
The IndyCar race schedule tells you the points rounds. It does not tell you which support series share the ticket, or when the 500 week swallows the calendar.
Separate the 500 from a normal round
Indianapolis in May is a month, not a Sunday. A street race the week before is a different ticket and a different points haul. If you are planning travel, book from the series calendar, then check the track for gate times.
OffroadPress covers the series. Dates move. Confirm the week of the race on the series site before you treat a screenshot as final.