In Jainism, Charamavart Kaal means the final phase of worldly existence in which a jīva becomes fit for spiritual awakening and the desire for moksha naturally arises. It is also described as the last Pudgal Paravartan Kaal. ( jainworld.jainworld.com)

In simple words:

• it is the last important stage before a soul turns toward liberation,
• in this phase, the soul begins to develop vairagya and a wish to leave संसार,
• and according to Jain teaching, this is the time when dharma and moksha-marg become meaningful for that jīva. ( jainworld.jainworld.com)

If you meant “Charamavart” in a different Jain context, the word is sometimes used in texts with slightly different wording, but the core idea remains the final phase connected with spiritual readiness. ( jaingpt.org)