When any of this actually happened

Centuries of ritual, yogic, devotional and philosophical material that later fed into Tantric traditions. The essay follows David B. Gray in holding that there is very little solid evidence for a distinct Tantric tradition before the 5th century, so this band has no left-hand edge.

Around the 5th and 6th centuries, in plural and regionally varied form rather than as one founding event — most prominently within Śaiva traditions, and somewhat later Śākta ones.

Appearing in distinct form from around the 7th century and, on Britannica’s account, flourishing roughly between the 6th and 11th. Gray is careful that its debt to the Śaiva ritual world was adaptation and doctrinal reframing, not copying.

Roughly the 7th to 10th centuries, connecting India, Nepal, Tibet, Central Asia, China, Southeast Asia and Japan — a living and contested exchange rather than one closed transfer.

Kūkai (774–835) studied in Chang’an under the esoteric master Huiguo. Saichō (767–822) travelled the same year, primarily for Tiantai doctrine, receiving some esoteric initiations as well.

Permission to found a new school. Shingon’s central doctrine, sokushin jōbutsu, is a claim about awakening within this body and this lifetime — a doctrinal and philosophical claim, not one about physical wellness.

Esoteric Buddhist thought and practice worked deep into Japanese religious institutions, ritual life, art and politics, within both Shingon and Tendai and in many local variations beyond them. The end of this band is soft: the essay describes medieval centuries, not a closing date.

The monastic complex that remains Shingon Buddhism’s spiritual centre today. Tendai’s esoteric strand, Taimitsu, reached full standing only through Saichō’s successors Ennin and Annen — a multi-generational institutional development rather than one doctrine handed down complete.

Nineteenth-century colonial administrators, missionaries and Orientalist scholars in India reshaped how Tantra was represented. Hugh Urban argues the familiar Western "Tantra" is itself a dialectical category, produced jointly through mutual misrepresentation — his position, presented here as his rather than as consensus.

Some popular histories credit Bernard, active in the United States from the early 1900s, as an early figure recasting Tantra as therapeutic sexuality and personal empowerment. The essay treats these accounts as suggestive rather than settled, and says a dedicated academic biography would be needed to state his role with confidence. Drawn dashed for that reason.

Sir John Woodroffe, writing as Arthur Avalon, published the first substantial scholarly English study of one specific chakra scheme — drawn from a 16th-century Sanskrit text describing six centres, not seven.

The Theosophical writer Charles W. Leadbeater supplied the seven rainbow colours and much of today’s popular psychological framing. The chakra system familiar worldwide is, in this specific respect, younger than the telephone.

Urban credits the term itself to Bhagwan Shree Rajneesh (Osho), who popularised it from the 1960s and 1970s as a deliberate synthesis of Hindu and Buddhist Tantric elements with Western psychoanalytic theory and New Age spirituality — closer, in Urban’s framing, to a modern spiritual sexology than to the continuation of any older lineage.