If we had to pick one Golden Triangle for a first visit, it would be this. Four days lets Delhi, Agra and Jaipur each have a proper turn without a week-long commitment. You begin with an afternoon in Delhi’s Mughal and imperial quarter, spend a day at the Taj Mahal and Agra Fort, then give Jaipur a clear morning before the drive home.
Nothing is stretched, and nothing is dropped without a reason. The road legs are each under six hours and each includes a stop with a purpose, and the Taj Mahal is timed for the afternoon light that follows the morning drive from Delhi.
Travellers who want a slower rhythm usually move to five or six days; those who want to see the Taj at dawn look at the seven day plan, which has two nights in Agra.