Referring to a time that is past noon in a technical context (as in "ex-meridian calculation").

पूर्वाह्न के बाद का समय

English Usage: The ex-meridian timings for the experiment were crucial for accurate results.

Hindi Usage: प्रयोग के लिए पूर्वाह्न के बाद के समय बहुत महत्वपूर्ण थे।